Home / 86,292.92-129,470.52-30,141.32

Finding the Fourth Proportional to 86,292.92, 129,470.52 and 30,141.32

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Solution

The fourth proportional to 86,292.92, 129,470.52 and 30,141.32 is: 45,222.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,292.92 : 129,470.52 = 30,141.32 : x
  2. Step 2: Convert to fraction form
    86,292.92/129,470.52 = 30,141.32/x
  3. Step 3: Cross multiply
    86,292.92x = 129,470.52 × 30,141.32
  4. Step 4: Simplify right side
    86,292.92x = 3,902,412,373.89
  5. Step 5: Solve for x
    x = 3,902,412,373.89/86,292.92
  6. Step 6: Final answer
    x = 45,222.86

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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.