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Finding the Fourth Proportional to 71,610.80, 107,464.80 and 40,020.80

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Solution

The fourth proportional to 71,610.80, 107,464.80 and 40,020.80 is: 60,058.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,610.80 : 107,464.80 = 40,020.80 : x
  2. Step 2: Convert to fraction form
    71,610.80/107,464.80 = 40,020.80/x
  3. Step 3: Cross multiply
    71,610.80x = 107,464.80 × 40,020.80
  4. Step 4: Simplify right side
    71,610.80x = 4,300,827,267.84
  5. Step 5: Solve for x
    x = 4,300,827,267.84/71,610.80
  6. Step 6: Final answer
    x = 60,058.36

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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.