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Finding the Fourth Proportional to 86,009.30, 129,020.04 and 22,828.91

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Solution

The fourth proportional to 86,009.30, 129,020.04 and 22,828.91 is: 34,244.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,009.30 : 129,020.04 = 22,828.91 : x
  2. Step 2: Convert to fraction form
    86,009.30/129,020.04 = 22,828.91/x
  3. Step 3: Cross multiply
    86,009.30x = 129,020.04 × 22,828.91
  4. Step 4: Simplify right side
    86,009.30x = 2,945,386,881.36
  5. Step 5: Solve for x
    x = 2,945,386,881.36/86,009.30
  6. Step 6: Final answer
    x = 34,244.98

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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.