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Finding the Fourth Proportional to 85,950.47, 128,952.11 and 41,029.16

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Solution

The fourth proportional to 85,950.47, 128,952.11 and 41,029.16 is: 61,556.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,950.47 : 128,952.11 = 41,029.16 : x
  2. Step 2: Convert to fraction form
    85,950.47/128,952.11 = 41,029.16/x
  3. Step 3: Cross multiply
    85,950.47x = 128,952.11 × 41,029.16
  4. Step 4: Simplify right side
    85,950.47x = 5,290,796,211.34
  5. Step 5: Solve for x
    x = 5,290,796,211.34/85,950.47
  6. Step 6: Final answer
    x = 61,556.34

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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.