Home / 87,789.58-121,148.72-47,502.46

Finding the Fourth Proportional to 87,789.58, 121,148.72 and 47,502.46

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Solution

The fourth proportional to 87,789.58, 121,148.72 and 47,502.46 is: 65,552.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,789.58 : 121,148.72 = 47,502.46 : x
  2. Step 2: Convert to fraction form
    87,789.58/121,148.72 = 47,502.46/x
  3. Step 3: Cross multiply
    87,789.58x = 121,148.72 × 47,502.46
  4. Step 4: Simplify right side
    87,789.58x = 5,754,862,225.85
  5. Step 5: Solve for x
    x = 5,754,862,225.85/87,789.58
  6. Step 6: Final answer
    x = 65,552.91

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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.