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Finding the Fourth Proportional to 70,239.56, 105,369.82 and 25,862.90

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Solution

The fourth proportional to 70,239.56, 105,369.82 and 25,862.90 is: 38,798.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,239.56 : 105,369.82 = 25,862.90 : x
  2. Step 2: Convert to fraction form
    70,239.56/105,369.82 = 25,862.90/x
  3. Step 3: Cross multiply
    70,239.56x = 105,369.82 × 25,862.90
  4. Step 4: Simplify right side
    70,239.56x = 2,725,169,117.68
  5. Step 5: Solve for x
    x = 2,725,169,117.68/70,239.56
  6. Step 6: Final answer
    x = 38,798.21

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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.