Home / 81,159.12-112,000.14-45,350.64

Finding the Fourth Proportional to 81,159.12, 112,000.14 and 45,350.64

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Solution

The fourth proportional to 81,159.12, 112,000.14 and 45,350.64 is: 62,584.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,159.12 : 112,000.14 = 45,350.64 : x
  2. Step 2: Convert to fraction form
    81,159.12/112,000.14 = 45,350.64/x
  3. Step 3: Cross multiply
    81,159.12x = 112,000.14 × 45,350.64
  4. Step 4: Simplify right side
    81,159.12x = 5,079,278,029.09
  5. Step 5: Solve for x
    x = 5,079,278,029.09/81,159.12
  6. Step 6: Final answer
    x = 62,584.19

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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.