Home / 83,931.64-115,841.20-48,121.90

Finding the Fourth Proportional to 83,931.64, 115,841.20 and 48,121.90

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Solution

The fourth proportional to 83,931.64, 115,841.20 and 48,121.90 is: 66,417.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,931.64 : 115,841.20 = 48,121.90 : x
  2. Step 2: Convert to fraction form
    83,931.64/115,841.20 = 48,121.90/x
  3. Step 3: Cross multiply
    83,931.64x = 115,841.20 × 48,121.90
  4. Step 4: Simplify right side
    83,931.64x = 5,574,498,642.28
  5. Step 5: Solve for x
    x = 5,574,498,642.28/83,931.64
  6. Step 6: Final answer
    x = 66,417.13

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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.