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Finding the Fourth Proportional to 91,671.64, 137,419.98 and 39,008.68

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Solution

The fourth proportional to 91,671.64, 137,419.98 and 39,008.68 is: 58,475.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,671.64 : 137,419.98 = 39,008.68 : x
  2. Step 2: Convert to fraction form
    91,671.64/137,419.98 = 39,008.68/x
  3. Step 3: Cross multiply
    91,671.64x = 137,419.98 × 39,008.68
  4. Step 4: Simplify right side
    91,671.64x = 5,360,572,025.43
  5. Step 5: Solve for x
    x = 5,360,572,025.43/91,671.64
  6. Step 6: Final answer
    x = 58,475.79

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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.