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Finding the Fourth Proportional to 70,079.40, 105,040.92 and 27,948.42

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Solution

The fourth proportional to 70,079.40, 105,040.92 and 27,948.42 is: 41,891.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,079.40 : 105,040.92 = 27,948.42 : x
  2. Step 2: Convert to fraction form
    70,079.40/105,040.92 = 27,948.42/x
  3. Step 3: Cross multiply
    70,079.40x = 105,040.92 × 27,948.42
  4. Step 4: Simplify right side
    70,079.40x = 2,935,727,749.35
  5. Step 5: Solve for x
    x = 2,935,727,749.35/70,079.40
  6. Step 6: Final answer
    x = 41,891.45

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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.