Home / 87,303.92-130,959.12-28,140.44

Finding the Fourth Proportional to 87,303.92, 130,959.12 and 28,140.44

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Solution

The fourth proportional to 87,303.92, 130,959.12 and 28,140.44 is: 42,211.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,303.92 : 130,959.12 = 28,140.44 : x
  2. Step 2: Convert to fraction form
    87,303.92/130,959.12 = 28,140.44/x
  3. Step 3: Cross multiply
    87,303.92x = 130,959.12 × 28,140.44
  4. Step 4: Simplify right side
    87,303.92x = 3,685,247,258.81
  5. Step 5: Solve for x
    x = 3,685,247,258.81/87,303.92
  6. Step 6: Final answer
    x = 42,211.70

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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.