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Finding the Fourth Proportional to 40,302.80, 60,432.60 and 16,902.80

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Solution

The fourth proportional to 40,302.80, 60,432.60 and 16,902.80 is: 25,345.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,302.80 : 60,432.60 = 16,902.80 : x
  2. Step 2: Convert to fraction form
    40,302.80/60,432.60 = 16,902.80/x
  3. Step 3: Cross multiply
    40,302.80x = 60,432.60 × 16,902.80
  4. Step 4: Simplify right side
    40,302.80x = 1,021,480,151.28
  5. Step 5: Solve for x
    x = 1,021,480,151.28/40,302.80
  6. Step 6: Final answer
    x = 25,345.14

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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.