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Finding the Fourth Proportional to 70,280.61, 105,353.26 and 25,883.15

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Solution

The fourth proportional to 70,280.61, 105,353.26 and 25,883.15 is: 38,799.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,280.61 : 105,353.26 = 25,883.15 : x
  2. Step 2: Convert to fraction form
    70,280.61/105,353.26 = 25,883.15/x
  3. Step 3: Cross multiply
    70,280.61x = 105,353.26 × 25,883.15
  4. Step 4: Simplify right side
    70,280.61x = 2,726,873,640.09
  5. Step 5: Solve for x
    x = 2,726,873,640.09/70,280.61
  6. Step 6: Final answer
    x = 38,799.80

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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.