Home / 87,949.06-121,381.95-65,357.35

Finding the Fourth Proportional to 87,949.06, 121,381.95 and 65,357.35

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Solution

The fourth proportional to 87,949.06, 121,381.95 and 65,357.35 is: 90,202.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,949.06 : 121,381.95 = 65,357.35 : x
  2. Step 2: Convert to fraction form
    87,949.06/121,381.95 = 65,357.35/x
  3. Step 3: Cross multiply
    87,949.06x = 121,381.95 × 65,357.35
  4. Step 4: Simplify right side
    87,949.06x = 7,933,202,589.83
  5. Step 5: Solve for x
    x = 7,933,202,589.83/87,949.06
  6. Step 6: Final answer
    x = 90,202.24

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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.