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Finding the Fourth Proportional to 56,133.72, 84,214.03 and 18,694.11

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Solution

The fourth proportional to 56,133.72, 84,214.03 and 18,694.11 is: 28,045.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,133.72 : 84,214.03 = 18,694.11 : x
  2. Step 2: Convert to fraction form
    56,133.72/84,214.03 = 18,694.11/x
  3. Step 3: Cross multiply
    56,133.72x = 84,214.03 × 18,694.11
  4. Step 4: Simplify right side
    56,133.72x = 1,574,306,340.36
  5. Step 5: Solve for x
    x = 1,574,306,340.36/56,133.72
  6. Step 6: Final answer
    x = 28,045.64

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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.