Home / 74,772.78-103,188.12-42,502.29

Finding the Fourth Proportional to 74,772.78, 103,188.12 and 42,502.29

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Solution

The fourth proportional to 74,772.78, 103,188.12 and 42,502.29 is: 58,654.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,772.78 : 103,188.12 = 42,502.29 : x
  2. Step 2: Convert to fraction form
    74,772.78/103,188.12 = 42,502.29/x
  3. Step 3: Cross multiply
    74,772.78x = 103,188.12 × 42,502.29
  4. Step 4: Simplify right side
    74,772.78x = 4,385,731,400.79
  5. Step 5: Solve for x
    x = 4,385,731,400.79/74,772.78
  6. Step 6: Final answer
    x = 58,654.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.