Home / 71,748.20-107,622.30-71,287.40

Finding the Fourth Proportional to 71,748.20, 107,622.30 and 71,287.40

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Solution

The fourth proportional to 71,748.20, 107,622.30 and 71,287.40 is: 106,931.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,748.20 : 107,622.30 = 71,287.40 : x
  2. Step 2: Convert to fraction form
    71,748.20/107,622.30 = 71,287.40/x
  3. Step 3: Cross multiply
    71,748.20x = 107,622.30 × 71,287.40
  4. Step 4: Simplify right side
    71,748.20x = 7,672,113,949.02
  5. Step 5: Solve for x
    x = 7,672,113,949.02/71,748.20
  6. Step 6: Final answer
    x = 106,931.10

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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.