Home / 72,135.46-99,545.07-40,304.58

Finding the Fourth Proportional to 72,135.46, 99,545.07 and 40,304.58

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Solution

The fourth proportional to 72,135.46, 99,545.07 and 40,304.58 is: 55,619.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,135.46 : 99,545.07 = 40,304.58 : x
  2. Step 2: Convert to fraction form
    72,135.46/99,545.07 = 40,304.58/x
  3. Step 3: Cross multiply
    72,135.46x = 99,545.07 × 40,304.58
  4. Step 4: Simplify right side
    72,135.46x = 4,012,122,237.42
  5. Step 5: Solve for x
    x = 4,012,122,237.42/72,135.46
  6. Step 6: Final answer
    x = 55,619.28

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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.