Home / 55,879.05-77,112.67-30,385.43

Finding the Fourth Proportional to 55,879.05, 77,112.67 and 30,385.43

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Solution

The fourth proportional to 55,879.05, 77,112.67 and 30,385.43 is: 41,931.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,879.05 : 77,112.67 = 30,385.43 : x
  2. Step 2: Convert to fraction form
    55,879.05/77,112.67 = 30,385.43/x
  3. Step 3: Cross multiply
    55,879.05x = 77,112.67 × 30,385.43
  4. Step 4: Simplify right side
    55,879.05x = 2,343,101,098.91
  5. Step 5: Solve for x
    x = 2,343,101,098.91/55,879.05
  6. Step 6: Final answer
    x = 41,931.66

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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.