Home / 100,031.40-138,037.50-57,589.02

Finding the Fourth Proportional to 100,031.40, 138,037.50 and 57,589.02

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Solution

The fourth proportional to 100,031.40, 138,037.50 and 57,589.02 is: 79,469.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,031.40 : 138,037.50 = 57,589.02 : x
  2. Step 2: Convert to fraction form
    100,031.40/138,037.50 = 57,589.02/x
  3. Step 3: Cross multiply
    100,031.40x = 138,037.50 × 57,589.02
  4. Step 4: Simplify right side
    100,031.40x = 7,949,444,348.25
  5. Step 5: Solve for x
    x = 7,949,444,348.25/100,031.40
  6. Step 6: Final answer
    x = 79,469.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.