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Finding the Fourth Proportional to 70,958.25, 106,437.38 and 28,861.23

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Solution

The fourth proportional to 70,958.25, 106,437.38 and 28,861.23 is: 43,291.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,958.25 : 106,437.38 = 28,861.23 : x
  2. Step 2: Convert to fraction form
    70,958.25/106,437.38 = 28,861.23/x
  3. Step 3: Cross multiply
    70,958.25x = 106,437.38 × 28,861.23
  4. Step 4: Simplify right side
    70,958.25x = 3,071,913,959.61
  5. Step 5: Solve for x
    x = 3,071,913,959.61/70,958.25
  6. Step 6: Final answer
    x = 43,291.85

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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.