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Finding the Fourth Proportional to 68,488.72, 94,506.42 and 38,275.36

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Solution

The fourth proportional to 68,488.72, 94,506.42 and 38,275.36 is: 52,815.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,488.72 : 94,506.42 = 38,275.36 : x
  2. Step 2: Convert to fraction form
    68,488.72/94,506.42 = 38,275.36/x
  3. Step 3: Cross multiply
    68,488.72x = 94,506.42 × 38,275.36
  4. Step 4: Simplify right side
    68,488.72x = 3,617,267,247.81
  5. Step 5: Solve for x
    x = 3,617,267,247.81/68,488.72
  6. Step 6: Final answer
    x = 52,815.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.