Home / 63,869.92-88,139.28-40,009.75

Finding the Fourth Proportional to 63,869.92, 88,139.28 and 40,009.75

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Solution

The fourth proportional to 63,869.92, 88,139.28 and 40,009.75 is: 55,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,869.92 : 88,139.28 = 40,009.75 : x
  2. Step 2: Convert to fraction form
    63,869.92/88,139.28 = 40,009.75/x
  3. Step 3: Cross multiply
    63,869.92x = 88,139.28 × 40,009.75
  4. Step 4: Simplify right side
    63,869.92x = 3,526,430,557.98
  5. Step 5: Solve for x
    x = 3,526,430,557.98/63,869.92
  6. Step 6: Final answer
    x = 55,212.70

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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.