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Finding the Fourth Proportional to 74,515.88, 102,833.86 and 40,982.76

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Solution

The fourth proportional to 74,515.88, 102,833.86 and 40,982.76 is: 56,557.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,515.88 : 102,833.86 = 40,982.76 : x
  2. Step 2: Convert to fraction form
    74,515.88/102,833.86 = 40,982.76/x
  3. Step 3: Cross multiply
    74,515.88x = 102,833.86 × 40,982.76
  4. Step 4: Simplify right side
    74,515.88x = 4,214,415,404.25
  5. Step 5: Solve for x
    x = 4,214,415,404.25/74,515.88
  6. Step 6: Final answer
    x = 56,557.28

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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.