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Finding the Fourth Proportional to 73,687.80, 101,689.14 and 40,153.80

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Solution

The fourth proportional to 73,687.80, 101,689.14 and 40,153.80 is: 55,412.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,687.80 : 101,689.14 = 40,153.80 : x
  2. Step 2: Convert to fraction form
    73,687.80/101,689.14 = 40,153.80/x
  3. Step 3: Cross multiply
    73,687.80x = 101,689.14 × 40,153.80
  4. Step 4: Simplify right side
    73,687.80x = 4,083,205,389.73
  5. Step 5: Solve for x
    x = 4,083,205,389.73/73,687.80
  6. Step 6: Final answer
    x = 55,412.23

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1.5x scale

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.