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Finding the Fourth Proportional to 86,828.80, 130,210.80 and 34,227.40

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Solution

The fourth proportional to 86,828.80, 130,210.80 and 34,227.40 is: 51,328.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,828.80 : 130,210.80 = 34,227.40 : x
  2. Step 2: Convert to fraction form
    86,828.80/130,210.80 = 34,227.40/x
  3. Step 3: Cross multiply
    86,828.80x = 130,210.80 × 34,227.40
  4. Step 4: Simplify right side
    86,828.80x = 4,456,777,135.92
  5. Step 5: Solve for x
    x = 4,456,777,135.92/86,828.80
  6. Step 6: Final answer
    x = 51,328.33

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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.