Home / 72,961.44-109,377.20-28,619.84

Finding the Fourth Proportional to 72,961.44, 109,377.20 and 28,619.84

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Solution

The fourth proportional to 72,961.44, 109,377.20 and 28,619.84 is: 42,904.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,961.44 : 109,377.20 = 28,619.84 : x
  2. Step 2: Convert to fraction form
    72,961.44/109,377.20 = 28,619.84/x
  3. Step 3: Cross multiply
    72,961.44x = 109,377.20 × 28,619.84
  4. Step 4: Simplify right side
    72,961.44x = 3,130,357,963.65
  5. Step 5: Solve for x
    x = 3,130,357,963.65/72,961.44
  6. Step 6: Final answer
    x = 42,904.28

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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.