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Finding the Fourth Proportional to 91,081.64, 125,649.76 and 59,238.92

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Solution

The fourth proportional to 91,081.64, 125,649.76 and 59,238.92 is: 81,721.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,081.64 : 125,649.76 = 59,238.92 : x
  2. Step 2: Convert to fraction form
    91,081.64/125,649.76 = 59,238.92/x
  3. Step 3: Cross multiply
    91,081.64x = 125,649.76 × 59,238.92
  4. Step 4: Simplify right side
    91,081.64x = 7,443,355,452.41
  5. Step 5: Solve for x
    x = 7,443,355,452.41/91,081.64
  6. Step 6: Final answer
    x = 81,721.80

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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.