Home / 52,138.92-78,208.34-18,851.18

Finding the Fourth Proportional to 52,138.92, 78,208.34 and 18,851.18

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Solution

The fourth proportional to 52,138.92, 78,208.34 and 18,851.18 is: 28,276.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,138.92 : 78,208.34 = 18,851.18 : x
  2. Step 2: Convert to fraction form
    52,138.92/78,208.34 = 18,851.18/x
  3. Step 3: Cross multiply
    52,138.92x = 78,208.34 × 18,851.18
  4. Step 4: Simplify right side
    52,138.92x = 1,474,319,494.84
  5. Step 5: Solve for x
    x = 1,474,319,494.84/52,138.92
  6. Step 6: Final answer
    x = 28,276.76

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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.