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Finding the Fourth Proportional to 55,608.70, 83,413.05 and 31,989.10

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Solution

The fourth proportional to 55,608.70, 83,413.05 and 31,989.10 is: 47,983.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,608.70 : 83,413.05 = 31,989.10 : x
  2. Step 2: Convert to fraction form
    55,608.70/83,413.05 = 31,989.10/x
  3. Step 3: Cross multiply
    55,608.70x = 83,413.05 × 31,989.10
  4. Step 4: Simplify right side
    55,608.70x = 2,668,308,397.76
  5. Step 5: Solve for x
    x = 2,668,308,397.76/55,608.70
  6. Step 6: Final answer
    x = 47,983.65

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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.