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Finding the Fourth Proportional to 87,283.98, 130,947.84 and 28,118.34

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Solution

The fourth proportional to 87,283.98, 130,947.84 and 28,118.34 is: 42,184.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,283.98 : 130,947.84 = 28,118.34 : x
  2. Step 2: Convert to fraction form
    87,283.98/130,947.84 = 28,118.34/x
  3. Step 3: Cross multiply
    87,283.98x = 130,947.84 × 28,118.34
  4. Step 4: Simplify right side
    87,283.98x = 3,682,035,887.39
  5. Step 5: Solve for x
    x = 3,682,035,887.39/87,283.98
  6. Step 6: Final answer
    x = 42,184.56

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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.