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Finding the Fourth Proportional to 68,691,885.20, 102,949,354.20 and 52,656,045.20

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Solution

The fourth proportional to 68,691,885.20, 102,949,354.20 and 52,656,045.20 is: 78,916,248.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,691,885.20 : 102,949,354.20 = 52,656,045.20 : x
  2. Step 2: Convert to fraction form
    68,691,885.20/102,949,354.20 = 52,656,045.20/x
  3. Step 3: Cross multiply
    68,691,885.20x = 102,949,354.20 × 52,656,045.20
  4. Step 4: Simplify right side
    68,691,885.20x = 5,420,905,848,066,010
  5. Step 5: Solve for x
    x = 5,420,905,848,066,010/68,691,885.20
  6. Step 6: Final answer
    x = 78,916,248.00

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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.