Home / 80,596,985.10-120,895,477.65-20,012,711.10

Finding the Fourth Proportional to 80,596,985.10, 120,895,477.65 and 20,012,711.10

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Solution

The fourth proportional to 80,596,985.10, 120,895,477.65 and 20,012,711.10 is: 30,019,066.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,596,985.10 : 120,895,477.65 = 20,012,711.10 : x
  2. Step 2: Convert to fraction form
    80,596,985.10/120,895,477.65 = 20,012,711.10/x
  3. Step 3: Cross multiply
    80,596,985.10x = 120,895,477.65 × 20,012,711.10
  4. Step 4: Simplify right side
    80,596,985.10x = 2,419,446,267,505,957
  5. Step 5: Solve for x
    x = 2,419,446,267,505,957/80,596,985.10
  6. Step 6: Final answer
    x = 30,019,066.65

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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.