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Finding the Fourth Proportional to 71,408.80, 107,010.80 and 52,541.60

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Solution

The fourth proportional to 71,408.80, 107,010.80 and 52,541.60 is: 78,737.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,408.80 : 107,010.80 = 52,541.60 : x
  2. Step 2: Convert to fraction form
    71,408.80/107,010.80 = 52,541.60/x
  3. Step 3: Cross multiply
    71,408.80x = 107,010.80 × 52,541.60
  4. Step 4: Simplify right side
    71,408.80x = 5,622,518,649.28
  5. Step 5: Solve for x
    x = 5,622,518,649.28/71,408.80
  6. Step 6: Final answer
    x = 78,737.06

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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.