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Finding the Fourth Proportional to 91,092.55, 125,766.21 and 57,147.58

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Solution

The fourth proportional to 91,092.55, 125,766.21 and 57,147.58 is: 78,900.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,092.55 : 125,766.21 = 57,147.58 : x
  2. Step 2: Convert to fraction form
    91,092.55/125,766.21 = 57,147.58/x
  3. Step 3: Cross multiply
    91,092.55x = 125,766.21 × 57,147.58
  4. Step 4: Simplify right side
    91,092.55x = 7,187,234,547.27
  5. Step 5: Solve for x
    x = 7,187,234,547.27/91,092.55
  6. Step 6: Final answer
    x = 78,900.36

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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.