Home / 87,890.25-121,288.49-47,604

Finding the Fourth Proportional to 87,890.25, 121,288.49 and 47,604

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Solution

The fourth proportional to 87,890.25, 121,288.49 and 47,604 is: 65,693.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,890.25 : 121,288.49 = 47,604 : x
  2. Step 2: Convert to fraction form
    87,890.25/121,288.49 = 47,604/x
  3. Step 3: Cross multiply
    87,890.25x = 121,288.49 × 47,604
  4. Step 4: Simplify right side
    87,890.25x = 5,773,817,277.96
  5. Step 5: Solve for x
    x = 5,773,817,277.96/87,890.25
  6. Step 6: Final answer
    x = 65,693.49

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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.