Home / 87,890.47-121,288.29-47,603.90

Finding the Fourth Proportional to 87,890.47, 121,288.29 and 47,603.90

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Solution

The fourth proportional to 87,890.47, 121,288.29 and 47,603.90 is: 65,693.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,890.47 : 121,288.29 = 47,603.90 : x
  2. Step 2: Convert to fraction form
    87,890.47/121,288.29 = 47,603.90/x
  3. Step 3: Cross multiply
    87,890.47x = 121,288.29 × 47,603.90
  4. Step 4: Simplify right side
    87,890.47x = 5,773,795,753.04
  5. Step 5: Solve for x
    x = 5,773,795,753.04/87,890.47
  6. Step 6: Final answer
    x = 65,693.08

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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.