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Finding the Fourth Proportional to 70,804.29, 106,206.71 and 28,685.17

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Solution

The fourth proportional to 70,804.29, 106,206.71 and 28,685.17 is: 43,027.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,804.29 : 106,206.71 = 28,685.17 : x
  2. Step 2: Convert to fraction form
    70,804.29/106,206.71 = 28,685.17/x
  3. Step 3: Cross multiply
    70,804.29x = 106,206.71 × 28,685.17
  4. Step 4: Simplify right side
    70,804.29x = 3,046,557,531.49
  5. Step 5: Solve for x
    x = 3,046,557,531.49/70,804.29
  6. Step 6: Final answer
    x = 43,027.87

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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.