Home / 78,220.35-107,932.77-43,764.87

Finding the Fourth Proportional to 78,220.35, 107,932.77 and 43,764.87

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Solution

The fourth proportional to 78,220.35, 107,932.77 and 43,764.87 is: 60,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,220.35 : 107,932.77 = 43,764.87 : x
  2. Step 2: Convert to fraction form
    78,220.35/107,932.77 = 43,764.87/x
  3. Step 3: Cross multiply
    78,220.35x = 107,932.77 × 43,764.87
  4. Step 4: Simplify right side
    78,220.35x = 4,723,663,647.79
  5. Step 5: Solve for x
    x = 4,723,663,647.79/78,220.35
  6. Step 6: Final answer
    x = 60,389.19

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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.