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Finding the Fourth Proportional to 87,885.88, 121,282.64 and 47,599.72

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Solution

The fourth proportional to 87,885.88, 121,282.64 and 47,599.72 is: 65,687.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,885.88 : 121,282.64 = 47,599.72 : x
  2. Step 2: Convert to fraction form
    87,885.88/121,282.64 = 47,599.72/x
  3. Step 3: Cross multiply
    87,885.88x = 121,282.64 × 47,599.72
  4. Step 4: Simplify right side
    87,885.88x = 5,773,019,704.86
  5. Step 5: Solve for x
    x = 5,773,019,704.86/87,885.88
  6. Step 6: Final answer
    x = 65,687.68

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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.