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Finding the Fourth Proportional to 87,860, 121,246.62 and 47,573.76

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Solution

The fourth proportional to 87,860, 121,246.62 and 47,573.76 is: 65,651.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,860 : 121,246.62 = 47,573.76 : x
  2. Step 2: Convert to fraction form
    87,860/121,246.62 = 47,573.76/x
  3. Step 3: Cross multiply
    87,860x = 121,246.62 × 47,573.76
  4. Step 4: Simplify right side
    87,860x = 5,768,157,600.69
  5. Step 5: Solve for x
    x = 5,768,157,600.69/87,860
  6. Step 6: Final answer
    x = 65,651.69

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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.