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Finding the Fourth Proportional to 74,979.66, 112,426.94 and 30,554.40

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Solution

The fourth proportional to 74,979.66, 112,426.94 and 30,554.40 is: 45,814.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,979.66 : 112,426.94 = 30,554.40 : x
  2. Step 2: Convert to fraction form
    74,979.66/112,426.94 = 30,554.40/x
  3. Step 3: Cross multiply
    74,979.66x = 112,426.94 × 30,554.40
  4. Step 4: Simplify right side
    74,979.66x = 3,435,137,695.54
  5. Step 5: Solve for x
    x = 3,435,137,695.54/74,979.66
  6. Step 6: Final answer
    x = 45,814.26

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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.