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Finding the Fourth Proportional to 86,065.74, 129,045.75 and 29,881.71

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Solution

The fourth proportional to 86,065.74, 129,045.75 and 29,881.71 is: 44,804.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,065.74 : 129,045.75 = 29,881.71 : x
  2. Step 2: Convert to fraction form
    86,065.74/129,045.75 = 29,881.71/x
  3. Step 3: Cross multiply
    86,065.74x = 129,045.75 × 29,881.71
  4. Step 4: Simplify right side
    86,065.74x = 3,856,107,033.00
  5. Step 5: Solve for x
    x = 3,856,107,033.00/86,065.74
  6. Step 6: Final answer
    x = 44,804.21

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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.