Home / 80,607,756.32-120,734,402.61-66,616,142.30

Finding the Fourth Proportional to 80,607,756.32, 120,734,402.61 and 66,616,142.30

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Solution

The fourth proportional to 80,607,756.32, 120,734,402.61 and 66,616,142.30 is: 99,777,744.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,607,756.32 : 120,734,402.61 = 66,616,142.30 : x
  2. Step 2: Convert to fraction form
    80,607,756.32/120,734,402.61 = 66,616,142.30/x
  3. Step 3: Cross multiply
    80,607,756.32x = 120,734,402.61 × 66,616,142.30
  4. Step 4: Simplify right side
    80,607,756.32x = 8,042,860,144,773,251
  5. Step 5: Solve for x
    x = 8,042,860,144,773,251/80,607,756.32
  6. Step 6: Final answer
    x = 99,777,744.87

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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.