Home / 72,928.76-109,424.93-25,577.78

Finding the Fourth Proportional to 72,928.76, 109,424.93 and 25,577.78

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Solution

The fourth proportional to 72,928.76, 109,424.93 and 25,577.78 is: 38,377.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,928.76 : 109,424.93 = 25,577.78 : x
  2. Step 2: Convert to fraction form
    72,928.76/109,424.93 = 25,577.78/x
  3. Step 3: Cross multiply
    72,928.76x = 109,424.93 × 25,577.78
  4. Step 4: Simplify right side
    72,928.76x = 2,798,846,111.04
  5. Step 5: Solve for x
    x = 2,798,846,111.04/72,928.76
  6. Step 6: Final answer
    x = 38,377.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.