Home / 71,828.32-99,124.68-40,000.18

Finding the Fourth Proportional to 71,828.32, 99,124.68 and 40,000.18

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Solution

The fourth proportional to 71,828.32, 99,124.68 and 40,000.18 is: 55,201.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,828.32 : 99,124.68 = 40,000.18 : x
  2. Step 2: Convert to fraction form
    71,828.32/99,124.68 = 40,000.18/x
  3. Step 3: Cross multiply
    71,828.32x = 99,124.68 × 40,000.18
  4. Step 4: Simplify right side
    71,828.32x = 3,965,005,042.44
  5. Step 5: Solve for x
    x = 3,965,005,042.44/71,828.32
  6. Step 6: Final answer
    x = 55,201.14

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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.