Home / 52,111.20-78,109.20-28,754.40

Finding the Fourth Proportional to 52,111.20, 78,109.20 and 28,754.40

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Solution

The fourth proportional to 52,111.20, 78,109.20 and 28,754.40 is: 43,099.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,111.20 : 78,109.20 = 28,754.40 : x
  2. Step 2: Convert to fraction form
    52,111.20/78,109.20 = 28,754.40/x
  3. Step 3: Cross multiply
    52,111.20x = 78,109.20 × 28,754.40
  4. Step 4: Simplify right side
    52,111.20x = 2,245,983,180.48
  5. Step 5: Solve for x
    x = 2,245,983,180.48/52,111.20
  6. Step 6: Final answer
    x = 43,099.82

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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.