Home / 81,165.15-112,042.40-49,344.21

Finding the Fourth Proportional to 81,165.15, 112,042.40 and 49,344.21

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Solution

The fourth proportional to 81,165.15, 112,042.40 and 49,344.21 is: 68,115.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,165.15 : 112,042.40 = 49,344.21 : x
  2. Step 2: Convert to fraction form
    81,165.15/112,042.40 = 49,344.21/x
  3. Step 3: Cross multiply
    81,165.15x = 112,042.40 × 49,344.21
  4. Step 4: Simplify right side
    81,165.15x = 5,528,643,467.78
  5. Step 5: Solve for x
    x = 5,528,643,467.78/81,165.15
  6. Step 6: Final answer
    x = 68,115.98

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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.