Home / 80,075,606,655.40-120,113,409,983.10-21,193,644,466.60

Finding the Fourth Proportional to 80,075,606,655.40, 120,113,409,983.10 and 21,193,644,466.60

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Solution

The fourth proportional to 80,075,606,655.40, 120,113,409,983.10 and 21,193,644,466.60 is: 31,790,466,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,075,606,655.40 : 120,113,409,983.10 = 21,193,644,466.60 : x
  2. Step 2: Convert to fraction form
    80,075,606,655.40/120,113,409,983.10 = 21,193,644,466.60/x
  3. Step 3: Cross multiply
    80,075,606,655.40x = 120,113,409,983.10 × 21,193,644,466.60
  4. Step 4: Simplify right side
    80,075,606,655.40x = 2,545,640,906,852,784,406,528
  5. Step 5: Solve for x
    x = 2,545,640,906,852,784,406,528/80,075,606,655.40
  6. Step 6: Final answer
    x = 31,790,466,699.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.