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Finding the Fourth Proportional to 71,502.78, 106,772.54 and 58,380.78

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Solution

The fourth proportional to 71,502.78, 106,772.54 and 58,380.78 is: 87,177.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,502.78 : 106,772.54 = 58,380.78 : x
  2. Step 2: Convert to fraction form
    71,502.78/106,772.54 = 58,380.78/x
  3. Step 3: Cross multiply
    71,502.78x = 106,772.54 × 58,380.78
  4. Step 4: Simplify right side
    71,502.78x = 6,233,463,875.88
  5. Step 5: Solve for x
    x = 6,233,463,875.88/71,502.78
  6. Step 6: Final answer
    x = 87,177.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.