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Finding the Fourth Proportional to 70,151.88, 96,808.38 and 38,319.96

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Solution

The fourth proportional to 70,151.88, 96,808.38 and 38,319.96 is: 52,880.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,151.88 : 96,808.38 = 38,319.96 : x
  2. Step 2: Convert to fraction form
    70,151.88/96,808.38 = 38,319.96/x
  3. Step 3: Cross multiply
    70,151.88x = 96,808.38 × 38,319.96
  4. Step 4: Simplify right side
    70,151.88x = 3,709,693,249.26
  5. Step 5: Solve for x
    x = 3,709,693,249.26/70,151.88
  6. Step 6: Final answer
    x = 52,880.88

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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.