Home / 40,732.16-61,107.78-12,650.78

Finding the Fourth Proportional to 40,732.16, 61,107.78 and 12,650.78

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Solution

The fourth proportional to 40,732.16, 61,107.78 and 12,650.78 is: 18,979.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,732.16 : 61,107.78 = 12,650.78 : x
  2. Step 2: Convert to fraction form
    40,732.16/61,107.78 = 12,650.78/x
  3. Step 3: Cross multiply
    40,732.16x = 61,107.78 × 12,650.78
  4. Step 4: Simplify right side
    40,732.16x = 773,061,081.07
  5. Step 5: Solve for x
    x = 773,061,081.07/40,732.16
  6. Step 6: Final answer
    x = 18,979.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.