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Finding the Fourth Proportional to 71,846.77, 99,147.56 and 40,015.89

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Solution

The fourth proportional to 71,846.77, 99,147.56 and 40,015.89 is: 55,221.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,846.77 : 99,147.56 = 40,015.89 : x
  2. Step 2: Convert to fraction form
    71,846.77/99,147.56 = 40,015.89/x
  3. Step 3: Cross multiply
    71,846.77x = 99,147.56 × 40,015.89
  4. Step 4: Simplify right side
    71,846.77x = 3,967,478,026.45
  5. Step 5: Solve for x
    x = 3,967,478,026.45/71,846.77
  6. Step 6: Final answer
    x = 55,221.39

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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.