Home / 43,123.46-64,685.20-19,680.26

Finding the Fourth Proportional to 43,123.46, 64,685.20 and 19,680.26

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Solution

The fourth proportional to 43,123.46, 64,685.20 and 19,680.26 is: 29,520.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,123.46 : 64,685.20 = 19,680.26 : x
  2. Step 2: Convert to fraction form
    43,123.46/64,685.20 = 19,680.26/x
  3. Step 3: Cross multiply
    43,123.46x = 64,685.20 × 19,680.26
  4. Step 4: Simplify right side
    43,123.46x = 1,273,021,554.15
  5. Step 5: Solve for x
    x = 1,273,021,554.15/43,123.46
  6. Step 6: Final answer
    x = 29,520.39

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Double scale
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Similar ratio
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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.