Home / 87,185.64-130,783.16-28,016.76

Finding the Fourth Proportional to 87,185.64, 130,783.16 and 28,016.76

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Solution

The fourth proportional to 87,185.64, 130,783.16 and 28,016.76 is: 42,026.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,185.64 : 130,783.16 = 28,016.76 : x
  2. Step 2: Convert to fraction form
    87,185.64/130,783.16 = 28,016.76/x
  3. Step 3: Cross multiply
    87,185.64x = 130,783.16 × 28,016.76
  4. Step 4: Simplify right side
    87,185.64x = 3,664,120,405.76
  5. Step 5: Solve for x
    x = 3,664,120,405.76/87,185.64
  6. Step 6: Final answer
    x = 42,026.65

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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.