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Finding the Fourth Proportional to 101,512.47, 140,055 and 59,062.80

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Solution

The fourth proportional to 101,512.47, 140,055 and 59,062.80 is: 81,487.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,512.47 : 140,055 = 59,062.80 : x
  2. Step 2: Convert to fraction form
    101,512.47/140,055 = 59,062.80/x
  3. Step 3: Cross multiply
    101,512.47x = 140,055 × 59,062.80
  4. Step 4: Simplify right side
    101,512.47x = 8,272,040,454
  5. Step 5: Solve for x
    x = 8,272,040,454/101,512.47
  6. Step 6: Final answer
    x = 81,487.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.