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Finding the Fourth Proportional to 70,273.66, 105,424.61 and 25,900.66

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Solution

The fourth proportional to 70,273.66, 105,424.61 and 25,900.66 is: 38,856.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,273.66 : 105,424.61 = 25,900.66 : x
  2. Step 2: Convert to fraction form
    70,273.66/105,424.61 = 25,900.66/x
  3. Step 3: Cross multiply
    70,273.66x = 105,424.61 × 25,900.66
  4. Step 4: Simplify right side
    70,273.66x = 2,730,566,979.24
  5. Step 5: Solve for x
    x = 2,730,566,979.24/70,273.66
  6. Step 6: Final answer
    x = 38,856.19

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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.