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Finding the Fourth Proportional to 68,442.71, 102,646.24 and 28,979.51

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Solution

The fourth proportional to 68,442.71, 102,646.24 and 28,979.51 is: 43,461.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,442.71 : 102,646.24 = 28,979.51 : x
  2. Step 2: Convert to fraction form
    68,442.71/102,646.24 = 28,979.51/x
  3. Step 3: Cross multiply
    68,442.71x = 102,646.24 × 28,979.51
  4. Step 4: Simplify right side
    68,442.71x = 2,974,637,738.54
  5. Step 5: Solve for x
    x = 2,974,637,738.54/68,442.71
  6. Step 6: Final answer
    x = 43,461.72

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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.