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Finding the Fourth Proportional to 67,548.80, 101,359.68 and 28,133.12

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Solution

The fourth proportional to 67,548.80, 101,359.68 and 28,133.12 is: 42,214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,548.80 : 101,359.68 = 28,133.12 : x
  2. Step 2: Convert to fraction form
    67,548.80/101,359.68 = 28,133.12/x
  3. Step 3: Cross multiply
    67,548.80x = 101,359.68 × 28,133.12
  4. Step 4: Simplify right side
    67,548.80x = 2,851,564,040.60
  5. Step 5: Solve for x
    x = 2,851,564,040.60/67,548.80
  6. Step 6: Final answer
    x = 42,214.87

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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.