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Finding the Fourth Proportional to 48,334.40, 72,674.40 and 40,731.20

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Solution

The fourth proportional to 48,334.40, 72,674.40 and 40,731.20 is: 61,242.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,334.40 : 72,674.40 = 40,731.20 : x
  2. Step 2: Convert to fraction form
    48,334.40/72,674.40 = 40,731.20/x
  3. Step 3: Cross multiply
    48,334.40x = 72,674.40 × 40,731.20
  4. Step 4: Simplify right side
    48,334.40x = 2,960,115,521.28
  5. Step 5: Solve for x
    x = 2,960,115,521.28/48,334.40
  6. Step 6: Final answer
    x = 61,242.42

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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.