Home / 71,436.32-107,126.70-38,138.19

Finding the Fourth Proportional to 71,436.32, 107,126.70 and 38,138.19

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Solution

The fourth proportional to 71,436.32, 107,126.70 and 38,138.19 is: 57,192.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,436.32 : 107,126.70 = 38,138.19 : x
  2. Step 2: Convert to fraction form
    71,436.32/107,126.70 = 38,138.19/x
  3. Step 3: Cross multiply
    71,436.32x = 107,126.70 × 38,138.19
  4. Step 4: Simplify right side
    71,436.32x = 4,085,618,438.67
  5. Step 5: Solve for x
    x = 4,085,618,438.67/71,436.32
  6. Step 6: Final answer
    x = 57,192.46

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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.