Home / 70,489.08-105,740.30-25,521.78

Finding the Fourth Proportional to 70,489.08, 105,740.30 and 25,521.78

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Solution

The fourth proportional to 70,489.08, 105,740.30 and 25,521.78 is: 38,285.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,489.08 : 105,740.30 = 25,521.78 : x
  2. Step 2: Convert to fraction form
    70,489.08/105,740.30 = 25,521.78/x
  3. Step 3: Cross multiply
    70,489.08x = 105,740.30 × 25,521.78
  4. Step 4: Simplify right side
    70,489.08x = 2,698,680,546.13
  5. Step 5: Solve for x
    x = 2,698,680,546.13/70,489.08
  6. Step 6: Final answer
    x = 38,285.09

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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.