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Finding the Fourth Proportional to 48,336.40, 72,461.40 and 18,744.40

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Solution

The fourth proportional to 48,336.40, 72,461.40 and 18,744.40 is: 28,099.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,336.40 : 72,461.40 = 18,744.40 : x
  2. Step 2: Convert to fraction form
    48,336.40/72,461.40 = 18,744.40/x
  3. Step 3: Cross multiply
    48,336.40x = 72,461.40 × 18,744.40
  4. Step 4: Simplify right side
    48,336.40x = 1,358,245,466.16
  5. Step 5: Solve for x
    x = 1,358,245,466.16/48,336.40
  6. Step 6: Final answer
    x = 28,099.85

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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.