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Finding the Fourth Proportional to 40,280.40, 60,420.60 and 25,441.20

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Solution

The fourth proportional to 40,280.40, 60,420.60 and 25,441.20 is: 38,161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,280.40 : 60,420.60 = 25,441.20 : x
  2. Step 2: Convert to fraction form
    40,280.40/60,420.60 = 25,441.20/x
  3. Step 3: Cross multiply
    40,280.40x = 60,420.60 × 25,441.20
  4. Step 4: Simplify right side
    40,280.40x = 1,537,172,568.72
  5. Step 5: Solve for x
    x = 1,537,172,568.72/40,280.40
  6. Step 6: Final answer
    x = 38,161.80

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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.