Home / 71,612.20-107,418.30-38,434.60

Finding the Fourth Proportional to 71,612.20, 107,418.30 and 38,434.60

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Solution

The fourth proportional to 71,612.20, 107,418.30 and 38,434.60 is: 57,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,612.20 : 107,418.30 = 38,434.60 : x
  2. Step 2: Convert to fraction form
    71,612.20/107,418.30 = 38,434.60/x
  3. Step 3: Cross multiply
    71,612.20x = 107,418.30 × 38,434.60
  4. Step 4: Simplify right side
    71,612.20x = 4,128,579,393.18
  5. Step 5: Solve for x
    x = 4,128,579,393.18/71,612.20
  6. Step 6: Final answer
    x = 57,651.90

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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.