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Finding the Fourth Proportional to 67,728.67, 101,602.53 and 28,276.81

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Solution

The fourth proportional to 67,728.67, 101,602.53 and 28,276.81 is: 42,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,728.67 : 101,602.53 = 28,276.81 : x
  2. Step 2: Convert to fraction form
    67,728.67/101,602.53 = 28,276.81/x
  3. Step 3: Cross multiply
    67,728.67x = 101,602.53 × 28,276.81
  4. Step 4: Simplify right side
    67,728.67x = 2,872,995,436.33
  5. Step 5: Solve for x
    x = 2,872,995,436.33/67,728.67
  6. Step 6: Final answer
    x = 42,419.19

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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.