Home / 71,643.38-107,548.10-38,428.32

Finding the Fourth Proportional to 71,643.38, 107,548.10 and 38,428.32

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Solution

The fourth proportional to 71,643.38, 107,548.10 and 38,428.32 is: 57,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,643.38 : 107,548.10 = 38,428.32 : x
  2. Step 2: Convert to fraction form
    71,643.38/107,548.10 = 38,428.32/x
  3. Step 3: Cross multiply
    71,643.38x = 107,548.10 × 38,428.32
  4. Step 4: Simplify right side
    71,643.38x = 4,132,892,610.05
  5. Step 5: Solve for x
    x = 4,132,892,610.05/71,643.38
  6. Step 6: Final answer
    x = 57,687.01

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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.