Home / 72,543.27-100,112.84-40,277.89

Finding the Fourth Proportional to 72,543.27, 100,112.84 and 40,277.89

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Solution

The fourth proportional to 72,543.27, 100,112.84 and 40,277.89 is: 55,585.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,543.27 : 100,112.84 = 40,277.89 : x
  2. Step 2: Convert to fraction form
    72,543.27/100,112.84 = 40,277.89/x
  3. Step 3: Cross multiply
    72,543.27x = 100,112.84 × 40,277.89
  4. Step 4: Simplify right side
    72,543.27x = 4,032,333,505.44
  5. Step 5: Solve for x
    x = 4,032,333,505.44/72,543.27
  6. Step 6: Final answer
    x = 55,585.22

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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.