Home / 87,698.25-121,023.45-47,412.05

Finding the Fourth Proportional to 87,698.25, 121,023.45 and 47,412.05

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Solution

The fourth proportional to 87,698.25, 121,023.45 and 47,412.05 is: 65,428.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,698.25 : 121,023.45 = 47,412.05 : x
  2. Step 2: Convert to fraction form
    87,698.25/121,023.45 = 47,412.05/x
  3. Step 3: Cross multiply
    87,698.25x = 121,023.45 × 47,412.05
  4. Step 4: Simplify right side
    87,698.25x = 5,737,969,257.46
  5. Step 5: Solve for x
    x = 5,737,969,257.46/87,698.25
  6. Step 6: Final answer
    x = 65,428.55

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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.