Home / 72,217.44-99,664.68-40,386.57

Finding the Fourth Proportional to 72,217.44, 99,664.68 and 40,386.57

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Solution

The fourth proportional to 72,217.44, 99,664.68 and 40,386.57 is: 55,736.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,217.44 : 99,664.68 = 40,386.57 : x
  2. Step 2: Convert to fraction form
    72,217.44/99,664.68 = 40,386.57/x
  3. Step 3: Cross multiply
    72,217.44x = 99,664.68 × 40,386.57
  4. Step 4: Simplify right side
    72,217.44x = 4,025,114,125.88
  5. Step 5: Solve for x
    x = 4,025,114,125.88/72,217.44
  6. Step 6: Final answer
    x = 55,736.04

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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.