Home / 87,265.32-120,422.90-53,330.60

Finding the Fourth Proportional to 87,265.32, 120,422.90 and 53,330.60

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Solution

The fourth proportional to 87,265.32, 120,422.90 and 53,330.60 is: 73,594.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,265.32 : 120,422.90 = 53,330.60 : x
  2. Step 2: Convert to fraction form
    87,265.32/120,422.90 = 53,330.60/x
  3. Step 3: Cross multiply
    87,265.32x = 120,422.90 × 53,330.60
  4. Step 4: Simplify right side
    87,265.32x = 6,422,225,510.74
  5. Step 5: Solve for x
    x = 6,422,225,510.74/87,265.32
  6. Step 6: Final answer
    x = 73,594.25

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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.