Home / 83,780.63-125,669.85-20,601.30

Finding the Fourth Proportional to 83,780.63, 125,669.85 and 20,601.30

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Solution

The fourth proportional to 83,780.63, 125,669.85 and 20,601.30 is: 30,901.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,780.63 : 125,669.85 = 20,601.30 : x
  2. Step 2: Convert to fraction form
    83,780.63/125,669.85 = 20,601.30/x
  3. Step 3: Cross multiply
    83,780.63x = 125,669.85 × 20,601.30
  4. Step 4: Simplify right side
    83,780.63x = 2,588,962,231.55
  5. Step 5: Solve for x
    x = 2,588,962,231.55/83,780.63
  6. Step 6: Final answer
    x = 30,901.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.