Home / 87,856.30-121,121.18-55,574.86

Finding the Fourth Proportional to 87,856.30, 121,121.18 and 55,574.86

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Solution

The fourth proportional to 87,856.30, 121,121.18 and 55,574.86 is: 76,617.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,856.30 : 121,121.18 = 55,574.86 : x
  2. Step 2: Convert to fraction form
    87,856.30/121,121.18 = 55,574.86/x
  3. Step 3: Cross multiply
    87,856.30x = 121,121.18 × 55,574.86
  4. Step 4: Simplify right side
    87,856.30x = 6,731,292,621.53
  5. Step 5: Solve for x
    x = 6,731,292,621.53/87,856.30
  6. Step 6: Final answer
    x = 76,617.07

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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.