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Finding the Fourth Proportional to 52,079.70, 78,010.20 and 43,331.70

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Solution

The fourth proportional to 52,079.70, 78,010.20 and 43,331.70 is: 64,906.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,079.70 : 78,010.20 = 43,331.70 : x
  2. Step 2: Convert to fraction form
    52,079.70/78,010.20 = 43,331.70/x
  3. Step 3: Cross multiply
    52,079.70x = 78,010.20 × 43,331.70
  4. Step 4: Simplify right side
    52,079.70x = 3,380,314,583.34
  5. Step 5: Solve for x
    x = 3,380,314,583.34/52,079.70
  6. Step 6: Final answer
    x = 64,906.57

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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.