Home / 83,416.32-115,110-47,609.68

Finding the Fourth Proportional to 83,416.32, 115,110 and 47,609.68

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Solution

The fourth proportional to 83,416.32, 115,110 and 47,609.68 is: 65,698.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,416.32 : 115,110 = 47,609.68 : x
  2. Step 2: Convert to fraction form
    83,416.32/115,110 = 47,609.68/x
  3. Step 3: Cross multiply
    83,416.32x = 115,110 × 47,609.68
  4. Step 4: Simplify right side
    83,416.32x = 5,480,350,264.80
  5. Step 5: Solve for x
    x = 5,480,350,264.80/83,416.32
  6. Step 6: Final answer
    x = 65,698.78

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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.