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Finding the Fourth Proportional to 73,428, 101,339.28 and 43,620

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Solution

The fourth proportional to 73,428, 101,339.28 and 43,620 is: 60,200.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,428 : 101,339.28 = 43,620 : x
  2. Step 2: Convert to fraction form
    73,428/101,339.28 = 43,620/x
  3. Step 3: Cross multiply
    73,428x = 101,339.28 × 43,620
  4. Step 4: Simplify right side
    73,428x = 4,420,419,393.60
  5. Step 5: Solve for x
    x = 4,420,419,393.60/73,428
  6. Step 6: Final answer
    x = 60,200.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.