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Finding the Fourth Proportional to 86,013.92, 129,029.16 and 33,427.52

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Solution

The fourth proportional to 86,013.92, 129,029.16 and 33,427.52 is: 50,144.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,013.92 : 129,029.16 = 33,427.52 : x
  2. Step 2: Convert to fraction form
    86,013.92/129,029.16 = 33,427.52/x
  3. Step 3: Cross multiply
    86,013.92x = 129,029.16 × 33,427.52
  4. Step 4: Simplify right side
    86,013.92x = 4,313,124,826.48
  5. Step 5: Solve for x
    x = 4,313,124,826.48/86,013.92
  6. Step 6: Final answer
    x = 50,144.50

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1.5x scale

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.