Home / 87,929.46-121,329.63-49,678.83

Finding the Fourth Proportional to 87,929.46, 121,329.63 and 49,678.83

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Solution

The fourth proportional to 87,929.46, 121,329.63 and 49,678.83 is: 68,549.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,929.46 : 121,329.63 = 49,678.83 : x
  2. Step 2: Convert to fraction form
    87,929.46/121,329.63 = 49,678.83/x
  3. Step 3: Cross multiply
    87,929.46x = 121,329.63 × 49,678.83
  4. Step 4: Simplify right side
    87,929.46x = 6,027,514,062.73
  5. Step 5: Solve for x
    x = 6,027,514,062.73/87,929.46
  6. Step 6: Final answer
    x = 68,549.43

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1.5x scale

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.