Home / 87,703.56-120,937.46-70,689.92

Finding the Fourth Proportional to 87,703.56, 120,937.46 and 70,689.92

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Solution

The fourth proportional to 87,703.56, 120,937.46 and 70,689.92 is: 97,476.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,703.56 : 120,937.46 = 70,689.92 : x
  2. Step 2: Convert to fraction form
    87,703.56/120,937.46 = 70,689.92/x
  3. Step 3: Cross multiply
    87,703.56x = 120,937.46 × 70,689.92
  4. Step 4: Simplify right side
    87,703.56x = 8,549,058,414.27
  5. Step 5: Solve for x
    x = 8,549,058,414.27/87,703.56
  6. Step 6: Final answer
    x = 97,476.75

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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.