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Finding the Fourth Proportional to 70,250.76, 105,326.88 and 25,871.76

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Solution

The fourth proportional to 70,250.76, 105,326.88 and 25,871.76 is: 38,789.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,250.76 : 105,326.88 = 25,871.76 : x
  2. Step 2: Convert to fraction form
    70,250.76/105,326.88 = 25,871.76/x
  3. Step 3: Cross multiply
    70,250.76x = 105,326.88 × 25,871.76
  4. Step 4: Simplify right side
    70,250.76x = 2,724,991,760.91
  5. Step 5: Solve for x
    x = 2,724,991,760.91/70,250.76
  6. Step 6: Final answer
    x = 38,789.50

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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.