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Finding the Fourth Proportional to 43,500.65, 65,242.80 and 15,419.57

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Solution

The fourth proportional to 43,500.65, 65,242.80 and 15,419.57 is: 23,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,500.65 : 65,242.80 = 15,419.57 : x
  2. Step 2: Convert to fraction form
    43,500.65/65,242.80 = 15,419.57/x
  3. Step 3: Cross multiply
    43,500.65x = 65,242.80 × 15,419.57
  4. Step 4: Simplify right side
    43,500.65x = 1,006,015,595.38
  5. Step 5: Solve for x
    x = 1,006,015,595.38/43,500.65
  6. Step 6: Final answer
    x = 23,126.45

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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.