Home / 83,431.88-115,134.45-45,705.86

Finding the Fourth Proportional to 83,431.88, 115,134.45 and 45,705.86

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Solution

The fourth proportional to 83,431.88, 115,134.45 and 45,705.86 is: 63,073.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,431.88 : 115,134.45 = 45,705.86 : x
  2. Step 2: Convert to fraction form
    83,431.88/115,134.45 = 45,705.86/x
  3. Step 3: Cross multiply
    83,431.88x = 115,134.45 × 45,705.86
  4. Step 4: Simplify right side
    83,431.88x = 5,262,319,052.88
  5. Step 5: Solve for x
    x = 5,262,319,052.88/83,431.88
  6. Step 6: Final answer
    x = 63,073.24

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1.5x scale

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.