Home / 83,137.32-124,706.04-20,807.76

Finding the Fourth Proportional to 83,137.32, 124,706.04 and 20,807.76

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Solution

The fourth proportional to 83,137.32, 124,706.04 and 20,807.76 is: 31,211.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,137.32 : 124,706.04 = 20,807.76 : x
  2. Step 2: Convert to fraction form
    83,137.32/124,706.04 = 20,807.76/x
  3. Step 3: Cross multiply
    83,137.32x = 124,706.04 × 20,807.76
  4. Step 4: Simplify right side
    83,137.32x = 2,594,853,350.87
  5. Step 5: Solve for x
    x = 2,594,853,350.87/83,137.32
  6. Step 6: Final answer
    x = 31,211.66

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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.