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Finding the Fourth Proportional to 40,487.40, 55,843.68 and 35,100.20

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Solution

The fourth proportional to 40,487.40, 55,843.68 and 35,100.20 is: 48,413.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,487.40 : 55,843.68 = 35,100.20 : x
  2. Step 2: Convert to fraction form
    40,487.40/55,843.68 = 35,100.20/x
  3. Step 3: Cross multiply
    40,487.40x = 55,843.68 × 35,100.20
  4. Step 4: Simplify right side
    40,487.40x = 1,960,124,336.74
  5. Step 5: Solve for x
    x = 1,960,124,336.74/40,487.40
  6. Step 6: Final answer
    x = 48,413.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.