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Finding the Fourth Proportional to 70,126.97, 105,186.87 and 25,750.31

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Solution

The fourth proportional to 70,126.97, 105,186.87 and 25,750.31 is: 38,624.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,126.97 : 105,186.87 = 25,750.31 : x
  2. Step 2: Convert to fraction form
    70,126.97/105,186.87 = 25,750.31/x
  3. Step 3: Cross multiply
    70,126.97x = 105,186.87 × 25,750.31
  4. Step 4: Simplify right side
    70,126.97x = 2,708,593,984.50
  5. Step 5: Solve for x
    x = 2,708,593,984.50/70,126.97
  6. Step 6: Final answer
    x = 38,624.14

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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.