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Finding the Fourth Proportional to 65,664,168.60, 98,496,252.90 and 39,798,082.20

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Solution

The fourth proportional to 65,664,168.60, 98,496,252.90 and 39,798,082.20 is: 59,697,123.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,664,168.60 : 98,496,252.90 = 39,798,082.20 : x
  2. Step 2: Convert to fraction form
    65,664,168.60/98,496,252.90 = 39,798,082.20/x
  3. Step 3: Cross multiply
    65,664,168.60x = 98,496,252.90 × 39,798,082.20
  4. Step 4: Simplify right side
    65,664,168.60x = 3,919,961,969,306,189
  5. Step 5: Solve for x
    x = 3,919,961,969,306,189/65,664,168.60
  6. Step 6: Final answer
    x = 59,697,123.30

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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.