Home / 40,731.29-61,106.49-12,649.89

Finding the Fourth Proportional to 40,731.29, 61,106.49 and 12,649.89

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Solution

The fourth proportional to 40,731.29, 61,106.49 and 12,649.89 is: 18,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,731.29 : 61,106.49 = 12,649.89 : x
  2. Step 2: Convert to fraction form
    40,731.29/61,106.49 = 12,649.89/x
  3. Step 3: Cross multiply
    40,731.29x = 61,106.49 × 12,649.89
  4. Step 4: Simplify right side
    40,731.29x = 772,990,376.79
  5. Step 5: Solve for x
    x = 772,990,376.79/40,731.29
  6. Step 6: Final answer
    x = 18,977.80

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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.