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Finding the Fourth Proportional to 48,336.20, 72,482.70 and 18,744.20

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Solution

The fourth proportional to 48,336.20, 72,482.70 and 18,744.20 is: 28,107.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,336.20 : 72,482.70 = 18,744.20 : x
  2. Step 2: Convert to fraction form
    48,336.20/72,482.70 = 18,744.20/x
  3. Step 3: Cross multiply
    48,336.20x = 72,482.70 × 18,744.20
  4. Step 4: Simplify right side
    48,336.20x = 1,358,630,225.34
  5. Step 5: Solve for x
    x = 1,358,630,225.34/48,336.20
  6. Step 6: Final answer
    x = 28,107.92

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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.