Home / 87,708.17-121,037.25-47,421.94

Finding the Fourth Proportional to 87,708.17, 121,037.25 and 47,421.94

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Solution

The fourth proportional to 87,708.17, 121,037.25 and 47,421.94 is: 65,442.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,708.17 : 121,037.25 = 47,421.94 : x
  2. Step 2: Convert to fraction form
    87,708.17/121,037.25 = 47,421.94/x
  3. Step 3: Cross multiply
    87,708.17x = 121,037.25 × 47,421.94
  4. Step 4: Simplify right side
    87,708.17x = 5,739,821,207.27
  5. Step 5: Solve for x
    x = 5,739,821,207.27/87,708.17
  6. Step 6: Final answer
    x = 65,442.26

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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.