Home / 78,022,075.44-117,075,960.12-45,272,688.12

Finding the Fourth Proportional to 78,022,075.44, 117,075,960.12 and 45,272,688.12

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Solution

The fourth proportional to 78,022,075.44, 117,075,960.12 and 45,272,688.12 is: 67,933,894.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,022,075.44 : 117,075,960.12 = 45,272,688.12 : x
  2. Step 2: Convert to fraction form
    78,022,075.44/117,075,960.12 = 45,272,688.12/x
  3. Step 3: Cross multiply
    78,022,075.44x = 117,075,960.12 × 45,272,688.12
  4. Step 4: Simplify right side
    78,022,075.44x = 5,300,343,428,862,318
  5. Step 5: Solve for x
    x = 5,300,343,428,862,318/78,022,075.44
  6. Step 6: Final answer
    x = 67,933,894.34

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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.