Home / 87,789.71-121,148.93-47,502.57

Finding the Fourth Proportional to 87,789.71, 121,148.93 and 47,502.57

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Solution

The fourth proportional to 87,789.71, 121,148.93 and 47,502.57 is: 65,553.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,789.71 : 121,148.93 = 47,502.57 : x
  2. Step 2: Convert to fraction form
    87,789.71/121,148.93 = 47,502.57/x
  3. Step 3: Cross multiply
    87,789.71x = 121,148.93 × 47,502.57
  4. Step 4: Simplify right side
    87,789.71x = 5,754,885,527.75
  5. Step 5: Solve for x
    x = 5,754,885,527.75/87,789.71
  6. Step 6: Final answer
    x = 65,553.08

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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.