Home / 83,721.40-125,509.20-50,406.10

Finding the Fourth Proportional to 83,721.40, 125,509.20 and 50,406.10

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Solution

The fourth proportional to 83,721.40, 125,509.20 and 50,406.10 is: 75,565.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,721.40 : 125,509.20 = 50,406.10 : x
  2. Step 2: Convert to fraction form
    83,721.40/125,509.20 = 50,406.10/x
  3. Step 3: Cross multiply
    83,721.40x = 125,509.20 × 50,406.10
  4. Step 4: Simplify right side
    83,721.40x = 6,326,429,286.12
  5. Step 5: Solve for x
    x = 6,326,429,286.12/83,721.40
  6. Step 6: Final answer
    x = 75,565.26

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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.