Home / 87,906.04-121,310.40-47,619.88

Finding the Fourth Proportional to 87,906.04, 121,310.40 and 47,619.88

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Solution

The fourth proportional to 87,906.04, 121,310.40 and 47,619.88 is: 65,715.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,906.04 : 121,310.40 = 47,619.88 : x
  2. Step 2: Convert to fraction form
    87,906.04/121,310.40 = 47,619.88/x
  3. Step 3: Cross multiply
    87,906.04x = 121,310.40 × 47,619.88
  4. Step 4: Simplify right side
    87,906.04x = 5,776,786,690.75
  5. Step 5: Solve for x
    x = 5,776,786,690.75/87,906.04
  6. Step 6: Final answer
    x = 65,715.47

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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.