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Finding the Fourth Proportional to 40,274.40, 60,411.60 and 25,435.20

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Solution

The fourth proportional to 40,274.40, 60,411.60 and 25,435.20 is: 38,152.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,274.40 : 60,411.60 = 25,435.20 : x
  2. Step 2: Convert to fraction form
    40,274.40/60,411.60 = 25,435.20/x
  3. Step 3: Cross multiply
    40,274.40x = 60,411.60 × 25,435.20
  4. Step 4: Simplify right side
    40,274.40x = 1,536,581,128.32
  5. Step 5: Solve for x
    x = 1,536,581,128.32/40,274.40
  6. Step 6: Final answer
    x = 38,152.80

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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.