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Finding the Fourth Proportional to 92,280.60, 138,413.70 and 36,109.80

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Solution

The fourth proportional to 92,280.60, 138,413.70 and 36,109.80 is: 54,161.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,280.60 : 138,413.70 = 36,109.80 : x
  2. Step 2: Convert to fraction form
    92,280.60/138,413.70 = 36,109.80/x
  3. Step 3: Cross multiply
    92,280.60x = 138,413.70 × 36,109.80
  4. Step 4: Simplify right side
    92,280.60x = 4,998,091,024.26
  5. Step 5: Solve for x
    x = 4,998,091,024.26/92,280.60
  6. Step 6: Final answer
    x = 54,161.88

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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.