Home / 72,137.71-99,548.13-40,306.87

Finding the Fourth Proportional to 72,137.71, 99,548.13 and 40,306.87

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Solution

The fourth proportional to 72,137.71, 99,548.13 and 40,306.87 is: 55,622.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,137.71 : 99,548.13 = 40,306.87 : x
  2. Step 2: Convert to fraction form
    72,137.71/99,548.13 = 40,306.87/x
  3. Step 3: Cross multiply
    72,137.71x = 99,548.13 × 40,306.87
  4. Step 4: Simplify right side
    72,137.71x = 4,012,473,534.65
  5. Step 5: Solve for x
    x = 4,012,473,534.65/72,137.71
  6. Step 6: Final answer
    x = 55,622.41

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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.