Home / 40,779.38-61,186.08-15,836.78

Finding the Fourth Proportional to 40,779.38, 61,186.08 and 15,836.78

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Solution

The fourth proportional to 40,779.38, 61,186.08 and 15,836.78 is: 23,761.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,779.38 : 61,186.08 = 15,836.78 : x
  2. Step 2: Convert to fraction form
    40,779.38/61,186.08 = 15,836.78/x
  3. Step 3: Cross multiply
    40,779.38x = 61,186.08 × 15,836.78
  4. Step 4: Simplify right side
    40,779.38x = 968,990,488.02
  5. Step 5: Solve for x
    x = 968,990,488.02/40,779.38
  6. Step 6: Final answer
    x = 23,761.78

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1.5x scale

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.