Home / 55,879.59-77,115.33-30,387.66

Finding the Fourth Proportional to 55,879.59, 77,115.33 and 30,387.66

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Solution

The fourth proportional to 55,879.59, 77,115.33 and 30,387.66 is: 41,935.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,879.59 : 77,115.33 = 30,387.66 : x
  2. Step 2: Convert to fraction form
    55,879.59/77,115.33 = 30,387.66/x
  3. Step 3: Cross multiply
    55,879.59x = 77,115.33 × 30,387.66
  4. Step 4: Simplify right side
    55,879.59x = 2,343,354,428.83
  5. Step 5: Solve for x
    x = 2,343,354,428.83/55,879.59
  6. Step 6: Final answer
    x = 41,935.78

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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.