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Finding the Fourth Proportional to 81,565.74, 112,558.86 and 45,754.92

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Solution

The fourth proportional to 81,565.74, 112,558.86 and 45,754.92 is: 63,140.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,565.74 : 112,558.86 = 45,754.92 : x
  2. Step 2: Convert to fraction form
    81,565.74/112,558.86 = 45,754.92/x
  3. Step 3: Cross multiply
    81,565.74x = 112,558.86 × 45,754.92
  4. Step 4: Simplify right side
    81,565.74x = 5,150,121,634.59
  5. Step 5: Solve for x
    x = 5,150,121,634.59/81,565.74
  6. Step 6: Final answer
    x = 63,140.75

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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.