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Finding the Fourth Proportional to 32,436.50, 48,654.75 and 7,812.50

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Solution

The fourth proportional to 32,436.50, 48,654.75 and 7,812.50 is: 11,718.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,436.50 : 48,654.75 = 7,812.50 : x
  2. Step 2: Convert to fraction form
    32,436.50/48,654.75 = 7,812.50/x
  3. Step 3: Cross multiply
    32,436.50x = 48,654.75 × 7,812.50
  4. Step 4: Simplify right side
    32,436.50x = 380,115,234.38
  5. Step 5: Solve for x
    x = 380,115,234.38/32,436.50
  6. Step 6: Final answer
    x = 11,718.75

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1.5x scale

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.