Home / 71,437.32-107,128.20-38,139.19

Finding the Fourth Proportional to 71,437.32, 107,128.20 and 38,139.19

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Solution

The fourth proportional to 71,437.32, 107,128.20 and 38,139.19 is: 57,193.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,437.32 : 107,128.20 = 38,139.19 : x
  2. Step 2: Convert to fraction form
    71,437.32/107,128.20 = 38,139.19/x
  3. Step 3: Cross multiply
    71,437.32x = 107,128.20 × 38,139.19
  4. Step 4: Simplify right side
    71,437.32x = 4,085,782,774.16
  5. Step 5: Solve for x
    x = 4,085,782,774.16/71,437.32
  6. Step 6: Final answer
    x = 57,193.95

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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.