Home / 87,985.68-121,366.47-52,151.70

Finding the Fourth Proportional to 87,985.68, 121,366.47 and 52,151.70

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Solution

The fourth proportional to 87,985.68, 121,366.47 and 52,151.70 is: 71,937.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,985.68 : 121,366.47 = 52,151.70 : x
  2. Step 2: Convert to fraction form
    87,985.68/121,366.47 = 52,151.70/x
  3. Step 3: Cross multiply
    87,985.68x = 121,366.47 × 52,151.70
  4. Step 4: Simplify right side
    87,985.68x = 6,329,467,733.50
  5. Step 5: Solve for x
    x = 6,329,467,733.50/87,985.68
  6. Step 6: Final answer
    x = 71,937.48

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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.