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Finding the Fourth Proportional to 48,494.60, 72,741.90 and 40,891.40

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Solution

The fourth proportional to 48,494.60, 72,741.90 and 40,891.40 is: 61,337.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,494.60 : 72,741.90 = 40,891.40 : x
  2. Step 2: Convert to fraction form
    48,494.60/72,741.90 = 40,891.40/x
  3. Step 3: Cross multiply
    48,494.60x = 72,741.90 × 40,891.40
  4. Step 4: Simplify right side
    48,494.60x = 2,974,518,129.66
  5. Step 5: Solve for x
    x = 2,974,518,129.66/48,494.60
  6. Step 6: Final answer
    x = 61,337.10

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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.