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Finding the Fourth Proportional to 70,694.38, 106,013.66 and 28,566.51

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Solution

The fourth proportional to 70,694.38, 106,013.66 and 28,566.51 is: 42,838.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,694.38 : 106,013.66 = 28,566.51 : x
  2. Step 2: Convert to fraction form
    70,694.38/106,013.66 = 28,566.51/x
  3. Step 3: Cross multiply
    70,694.38x = 106,013.66 × 28,566.51
  4. Step 4: Simplify right side
    70,694.38x = 3,028,439,605.63
  5. Step 5: Solve for x
    x = 3,028,439,605.63/70,694.38
  6. Step 6: Final answer
    x = 42,838.48

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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.