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Finding the Fourth Proportional to 73,871.68, 111,306.16 and 61,012.12

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Solution

The fourth proportional to 73,871.68, 111,306.16 and 61,012.12 is: 91,930.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,871.68 : 111,306.16 = 61,012.12 : x
  2. Step 2: Convert to fraction form
    73,871.68/111,306.16 = 61,012.12/x
  3. Step 3: Cross multiply
    73,871.68x = 111,306.16 × 61,012.12
  4. Step 4: Simplify right side
    73,871.68x = 6,791,024,790.66
  5. Step 5: Solve for x
    x = 6,791,024,790.66/73,871.68
  6. Step 6: Final answer
    x = 91,930.02

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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.