Home / 70,081.20-105,135.65-25,708.34

Finding the Fourth Proportional to 70,081.20, 105,135.65 and 25,708.34

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Solution

The fourth proportional to 70,081.20, 105,135.65 and 25,708.34 is: 38,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,081.20 : 105,135.65 = 25,708.34 : x
  2. Step 2: Convert to fraction form
    70,081.20/105,135.65 = 25,708.34/x
  3. Step 3: Cross multiply
    70,081.20x = 105,135.65 × 25,708.34
  4. Step 4: Simplify right side
    70,081.20x = 2,702,862,382.10
  5. Step 5: Solve for x
    x = 2,702,862,382.10/70,081.20
  6. Step 6: Final answer
    x = 38,567.58

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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.