Home / 87,861.40-121,248.96-47,575.64

Finding the Fourth Proportional to 87,861.40, 121,248.96 and 47,575.64

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Solution

The fourth proportional to 87,861.40, 121,248.96 and 47,575.64 is: 65,654.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,861.40 : 121,248.96 = 47,575.64 : x
  2. Step 2: Convert to fraction form
    87,861.40/121,248.96 = 47,575.64/x
  3. Step 3: Cross multiply
    87,861.40x = 121,248.96 × 47,575.64
  4. Step 4: Simplify right side
    87,861.40x = 5,768,496,871.33
  5. Step 5: Solve for x
    x = 5,768,496,871.33/87,861.40
  6. Step 6: Final answer
    x = 65,654.51

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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.