Home / 71,681.36-107,340.60-38,279.12

Finding the Fourth Proportional to 71,681.36, 107,340.60 and 38,279.12

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Solution

The fourth proportional to 71,681.36, 107,340.60 and 38,279.12 is: 57,321.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,681.36 : 107,340.60 = 38,279.12 : x
  2. Step 2: Convert to fraction form
    71,681.36/107,340.60 = 38,279.12/x
  3. Step 3: Cross multiply
    71,681.36x = 107,340.60 × 38,279.12
  4. Step 4: Simplify right side
    71,681.36x = 4,108,903,708.27
  5. Step 5: Solve for x
    x = 4,108,903,708.27/71,681.36
  6. Step 6: Final answer
    x = 57,321.79

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1.5x scale

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.