Home / 87,364.28-120,402.60-63,449.30

Finding the Fourth Proportional to 87,364.28, 120,402.60 and 63,449.30

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Solution

The fourth proportional to 87,364.28, 120,402.60 and 63,449.30 is: 87,443.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,364.28 : 120,402.60 = 63,449.30 : x
  2. Step 2: Convert to fraction form
    87,364.28/120,402.60 = 63,449.30/x
  3. Step 3: Cross multiply
    87,364.28x = 120,402.60 × 63,449.30
  4. Step 4: Simplify right side
    87,364.28x = 7,639,460,688.18
  5. Step 5: Solve for x
    x = 7,639,460,688.18/87,364.28
  6. Step 6: Final answer
    x = 87,443.75

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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.