Home / 70,239.06-105,351.30-20,326.86

Finding the Fourth Proportional to 70,239.06, 105,351.30 and 20,326.86

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Solution

The fourth proportional to 70,239.06, 105,351.30 and 20,326.86 is: 30,488.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,239.06 : 105,351.30 = 20,326.86 : x
  2. Step 2: Convert to fraction form
    70,239.06/105,351.30 = 20,326.86/x
  3. Step 3: Cross multiply
    70,239.06x = 105,351.30 × 20,326.86
  4. Step 4: Simplify right side
    70,239.06x = 2,141,461,125.92
  5. Step 5: Solve for x
    x = 2,141,461,125.92/70,239.06
  6. Step 6: Final answer
    x = 30,488.18

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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.