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Finding the Fourth Proportional to 70,256.43, 105,310.80 and 43,602.36

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Solution

The fourth proportional to 70,256.43, 105,310.80 and 43,602.36 is: 65,357.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,256.43 : 105,310.80 = 43,602.36 : x
  2. Step 2: Convert to fraction form
    70,256.43/105,310.80 = 43,602.36/x
  3. Step 3: Cross multiply
    70,256.43x = 105,310.80 × 43,602.36
  4. Step 4: Simplify right side
    70,256.43x = 4,591,799,413.49
  5. Step 5: Solve for x
    x = 4,591,799,413.49/70,256.43
  6. Step 6: Final answer
    x = 65,357.71

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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.