Home / 87,917.92-121,326.84-47,631.76

Finding the Fourth Proportional to 87,917.92, 121,326.84 and 47,631.76

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Solution

The fourth proportional to 87,917.92, 121,326.84 and 47,631.76 is: 65,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,917.92 : 121,326.84 = 47,631.76 : x
  2. Step 2: Convert to fraction form
    87,917.92/121,326.84 = 47,631.76/x
  3. Step 3: Cross multiply
    87,917.92x = 121,326.84 × 47,631.76
  4. Step 4: Simplify right side
    87,917.92x = 5,779,010,924.44
  5. Step 5: Solve for x
    x = 5,779,010,924.44/87,917.92
  6. Step 6: Final answer
    x = 65,731.89

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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.