Home / 70,520.12-97,319.12-38,687.12

Finding the Fourth Proportional to 70,520.12, 97,319.12 and 38,687.12

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Solution

The fourth proportional to 70,520.12, 97,319.12 and 38,687.12 is: 53,388.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,520.12 : 97,319.12 = 38,687.12 : x
  2. Step 2: Convert to fraction form
    70,520.12/97,319.12 = 38,687.12/x
  3. Step 3: Cross multiply
    70,520.12x = 97,319.12 × 38,687.12
  4. Step 4: Simplify right side
    70,520.12x = 3,764,996,473.73
  5. Step 5: Solve for x
    x = 3,764,996,473.73/70,520.12
  6. Step 6: Final answer
    x = 53,388.97

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1.5x scale

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.