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Finding the Fourth Proportional to 73,689.96, 110,548.31 and 42,135.60

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Solution

The fourth proportional to 73,689.96, 110,548.31 and 42,135.60 is: 63,211.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,689.96 : 110,548.31 = 42,135.60 : x
  2. Step 2: Convert to fraction form
    73,689.96/110,548.31 = 42,135.60/x
  3. Step 3: Cross multiply
    73,689.96x = 110,548.31 × 42,135.60
  4. Step 4: Simplify right side
    73,689.96x = 4,658,019,370.84
  5. Step 5: Solve for x
    x = 4,658,019,370.84/73,689.96
  6. Step 6: Final answer
    x = 63,211.04

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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.