Home / 87,929.92-121,343.44-47,643.68

Finding the Fourth Proportional to 87,929.92, 121,343.44 and 47,643.68

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Solution

The fourth proportional to 87,929.92, 121,343.44 and 47,643.68 is: 65,748.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,929.92 : 121,343.44 = 47,643.68 : x
  2. Step 2: Convert to fraction form
    87,929.92/121,343.44 = 47,643.68/x
  3. Step 3: Cross multiply
    87,929.92x = 121,343.44 × 47,643.68
  4. Step 4: Simplify right side
    87,929.92x = 5,781,248,025.46
  5. Step 5: Solve for x
    x = 5,781,248,025.46/87,929.92
  6. Step 6: Final answer
    x = 65,748.36

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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.