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Finding the Fourth Proportional to 71,609.20, 107,413.80 and 36,617.20

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Solution

The fourth proportional to 71,609.20, 107,413.80 and 36,617.20 is: 54,925.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,609.20 : 107,413.80 = 36,617.20 : x
  2. Step 2: Convert to fraction form
    71,609.20/107,413.80 = 36,617.20/x
  3. Step 3: Cross multiply
    71,609.20x = 107,413.80 × 36,617.20
  4. Step 4: Simplify right side
    71,609.20x = 3,933,192,597.36
  5. Step 5: Solve for x
    x = 3,933,192,597.36/71,609.20
  6. Step 6: Final answer
    x = 54,925.80

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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.