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Finding the Fourth Proportional to 68,499.71, 102,731.74 and 29,036.51

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Solution

The fourth proportional to 68,499.71, 102,731.74 and 29,036.51 is: 43,547.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,499.71 : 102,731.74 = 29,036.51 : x
  2. Step 2: Convert to fraction form
    68,499.71/102,731.74 = 29,036.51/x
  3. Step 3: Cross multiply
    68,499.71x = 102,731.74 × 29,036.51
  4. Step 4: Simplify right side
    68,499.71x = 2,982,970,609.58
  5. Step 5: Solve for x
    x = 2,982,970,609.58/68,499.71
  6. Step 6: Final answer
    x = 43,547.20

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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.