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Finding the Fourth Proportional to 80,501.01, 111,052.80 and 56,640.84

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Solution

The fourth proportional to 80,501.01, 111,052.80 and 56,640.84 is: 78,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,501.01 : 111,052.80 = 56,640.84 : x
  2. Step 2: Convert to fraction form
    80,501.01/111,052.80 = 56,640.84/x
  3. Step 3: Cross multiply
    80,501.01x = 111,052.80 × 56,640.84
  4. Step 4: Simplify right side
    80,501.01x = 6,290,123,876.35
  5. Step 5: Solve for x
    x = 6,290,123,876.35/80,501.01
  6. Step 6: Final answer
    x = 78,137.20

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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.