Home / 83,822.64-125,728.20-31,207.92

Finding the Fourth Proportional to 83,822.64, 125,728.20 and 31,207.92

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Solution

The fourth proportional to 83,822.64, 125,728.20 and 31,207.92 is: 46,809.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,822.64 : 125,728.20 = 31,207.92 : x
  2. Step 2: Convert to fraction form
    83,822.64/125,728.20 = 31,207.92/x
  3. Step 3: Cross multiply
    83,822.64x = 125,728.20 × 31,207.92
  4. Step 4: Simplify right side
    83,822.64x = 3,923,715,607.34
  5. Step 5: Solve for x
    x = 3,923,715,607.34/83,822.64
  6. Step 6: Final answer
    x = 46,809.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.