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Finding the Fourth Proportional to 70,255.55, 105,425.25 and 25,914.13

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Solution

The fourth proportional to 70,255.55, 105,425.25 and 25,914.13 is: 38,886.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,255.55 : 105,425.25 = 25,914.13 : x
  2. Step 2: Convert to fraction form
    70,255.55/105,425.25 = 25,914.13/x
  3. Step 3: Cross multiply
    70,255.55x = 105,425.25 × 25,914.13
  4. Step 4: Simplify right side
    70,255.55x = 2,732,003,273.04
  5. Step 5: Solve for x
    x = 2,732,003,273.04/70,255.55
  6. Step 6: Final answer
    x = 38,886.65

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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.