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Finding the Fourth Proportional to 90,502.41, 124,972.67 and 56,568.88

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Solution

The fourth proportional to 90,502.41, 124,972.67 and 56,568.88 is: 78,114.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,502.41 : 124,972.67 = 56,568.88 : x
  2. Step 2: Convert to fraction form
    90,502.41/124,972.67 = 56,568.88/x
  3. Step 3: Cross multiply
    90,502.41x = 124,972.67 × 56,568.88
  4. Step 4: Simplify right side
    90,502.41x = 7,069,564,270.15
  5. Step 5: Solve for x
    x = 7,069,564,270.15/90,502.41
  6. Step 6: Final answer
    x = 78,114.65

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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.