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Finding the Fourth Proportional to 91,411.71, 126,125.42 and 57,425.73

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Solution

The fourth proportional to 91,411.71, 126,125.42 and 57,425.73 is: 79,233.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,411.71 : 126,125.42 = 57,425.73 : x
  2. Step 2: Convert to fraction form
    91,411.71/126,125.42 = 57,425.73/x
  3. Step 3: Cross multiply
    91,411.71x = 126,125.42 × 57,425.73
  4. Step 4: Simplify right side
    91,411.71x = 7,242,844,027.93
  5. Step 5: Solve for x
    x = 7,242,844,027.93/91,411.71
  6. Step 6: Final answer
    x = 79,233.22

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1.5x scale

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.