Home / 78,732,082.20-118,098,123.30-54,073,219.80

Finding the Fourth Proportional to 78,732,082.20, 118,098,123.30 and 54,073,219.80

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Solution

The fourth proportional to 78,732,082.20, 118,098,123.30 and 54,073,219.80 is: 81,109,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,732,082.20 : 118,098,123.30 = 54,073,219.80 : x
  2. Step 2: Convert to fraction form
    78,732,082.20/118,098,123.30 = 54,073,219.80/x
  3. Step 3: Cross multiply
    78,732,082.20x = 118,098,123.30 × 54,073,219.80
  4. Step 4: Simplify right side
    78,732,082.20x = 6,385,945,779,168,401
  5. Step 5: Solve for x
    x = 6,385,945,779,168,401/78,732,082.20
  6. Step 6: Final answer
    x = 81,109,829.70

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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.