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Finding the Fourth Proportional to 73,692, 101,695.68 and 40,158.72

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Solution

The fourth proportional to 73,692, 101,695.68 and 40,158.72 is: 55,419.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,692 : 101,695.68 = 40,158.72 : x
  2. Step 2: Convert to fraction form
    73,692/101,695.68 = 40,158.72/x
  3. Step 3: Cross multiply
    73,692x = 101,695.68 × 40,158.72
  4. Step 4: Simplify right side
    73,692x = 4,083,968,338.33
  5. Step 5: Solve for x
    x = 4,083,968,338.33/73,692
  6. Step 6: Final answer
    x = 55,419.43

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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.