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Finding the Fourth Proportional to 70,406.40, 97,160.40 and 38,575.20

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Solution

The fourth proportional to 70,406.40, 97,160.40 and 38,575.20 is: 53,233.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,406.40 : 97,160.40 = 38,575.20 : x
  2. Step 2: Convert to fraction form
    70,406.40/97,160.40 = 38,575.20/x
  3. Step 3: Cross multiply
    70,406.40x = 97,160.40 × 38,575.20
  4. Step 4: Simplify right side
    70,406.40x = 3,747,981,862.08
  5. Step 5: Solve for x
    x = 3,747,981,862.08/70,406.40
  6. Step 6: Final answer
    x = 53,233.54

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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.