Home / 70,142.11-105,216.29-25,744.65

Finding the Fourth Proportional to 70,142.11, 105,216.29 and 25,744.65

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Solution

The fourth proportional to 70,142.11, 105,216.29 and 25,744.65 is: 38,618.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,142.11 : 105,216.29 = 25,744.65 : x
  2. Step 2: Convert to fraction form
    70,142.11/105,216.29 = 25,744.65/x
  3. Step 3: Cross multiply
    70,142.11x = 105,216.29 × 25,744.65
  4. Step 4: Simplify right side
    70,142.11x = 2,708,756,560.35
  5. Step 5: Solve for x
    x = 2,708,756,560.35/70,142.11
  6. Step 6: Final answer
    x = 38,618.12

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1.5x scale

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.