Home / 101,979.20-152,967.72-31,859.12

Finding the Fourth Proportional to 101,979.20, 152,967.72 and 31,859.12

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Solution

The fourth proportional to 101,979.20, 152,967.72 and 31,859.12 is: 47,788.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,979.20 : 152,967.72 = 31,859.12 : x
  2. Step 2: Convert to fraction form
    101,979.20/152,967.72 = 31,859.12/x
  3. Step 3: Cross multiply
    101,979.20x = 152,967.72 × 31,859.12
  4. Step 4: Simplify right side
    101,979.20x = 4,873,416,947.61
  5. Step 5: Solve for x
    x = 4,873,416,947.61/101,979.20
  6. Step 6: Final answer
    x = 47,788.34

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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.