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Finding the Fourth Proportional to 86,045.94, 129,102.01 and 41,669.28

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Solution

The fourth proportional to 86,045.94, 129,102.01 and 41,669.28 is: 62,519.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,045.94 : 129,102.01 = 41,669.28 : x
  2. Step 2: Convert to fraction form
    86,045.94/129,102.01 = 41,669.28/x
  3. Step 3: Cross multiply
    86,045.94x = 129,102.01 × 41,669.28
  4. Step 4: Simplify right side
    86,045.94x = 5,379,587,699.08
  5. Step 5: Solve for x
    x = 5,379,587,699.08/86,045.94
  6. Step 6: Final answer
    x = 62,519.95

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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.