Home / 56,418.85-77,854.42-30,920.71

Finding the Fourth Proportional to 56,418.85, 77,854.42 and 30,920.71

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Solution

The fourth proportional to 56,418.85, 77,854.42 and 30,920.71 is: 42,668.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,418.85 : 77,854.42 = 30,920.71 : x
  2. Step 2: Convert to fraction form
    56,418.85/77,854.42 = 30,920.71/x
  3. Step 3: Cross multiply
    56,418.85x = 77,854.42 × 30,920.71
  4. Step 4: Simplify right side
    56,418.85x = 2,407,313,671.10
  5. Step 5: Solve for x
    x = 2,407,313,671.10/56,418.85
  6. Step 6: Final answer
    x = 42,668.61

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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.