Home / 87,710.76-121,039.25-53,713.85

Finding the Fourth Proportional to 87,710.76, 121,039.25 and 53,713.85

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Solution

The fourth proportional to 87,710.76, 121,039.25 and 53,713.85 is: 74,124.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,710.76 : 121,039.25 = 53,713.85 : x
  2. Step 2: Convert to fraction form
    87,710.76/121,039.25 = 53,713.85/x
  3. Step 3: Cross multiply
    87,710.76x = 121,039.25 × 53,713.85
  4. Step 4: Simplify right side
    87,710.76x = 6,501,483,244.85
  5. Step 5: Solve for x
    x = 6,501,483,244.85/87,710.76
  6. Step 6: Final answer
    x = 74,124.12

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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.