Home / 71,938.12-107,928.24-36,902.20

Finding the Fourth Proportional to 71,938.12, 107,928.24 and 36,902.20

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Solution

The fourth proportional to 71,938.12, 107,928.24 and 36,902.20 is: 55,364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,938.12 : 107,928.24 = 36,902.20 : x
  2. Step 2: Convert to fraction form
    71,938.12/107,928.24 = 36,902.20/x
  3. Step 3: Cross multiply
    71,938.12x = 107,928.24 × 36,902.20
  4. Step 4: Simplify right side
    71,938.12x = 3,982,789,498.13
  5. Step 5: Solve for x
    x = 3,982,789,498.13/71,938.12
  6. Step 6: Final answer
    x = 55,364.10

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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.