Home / 90,876.83-125,412.92-56,874.45

Finding the Fourth Proportional to 90,876.83, 125,412.92 and 56,874.45

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Solution

The fourth proportional to 90,876.83, 125,412.92 and 56,874.45 is: 78,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,876.83 : 125,412.92 = 56,874.45 : x
  2. Step 2: Convert to fraction form
    90,876.83/125,412.92 = 56,874.45/x
  3. Step 3: Cross multiply
    90,876.83x = 125,412.92 × 56,874.45
  4. Step 4: Simplify right side
    90,876.83x = 7,132,790,558.05
  5. Step 5: Solve for x
    x = 7,132,790,558.05/90,876.83
  6. Step 6: Final answer
    x = 78,488.55

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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.