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Finding the Fourth Proportional to 67,242.30, 92,806.47 and 38,963.58

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Solution

The fourth proportional to 67,242.30, 92,806.47 and 38,963.58 is: 53,776.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,242.30 : 92,806.47 = 38,963.58 : x
  2. Step 2: Convert to fraction form
    67,242.30/92,806.47 = 38,963.58/x
  3. Step 3: Cross multiply
    67,242.30x = 92,806.47 × 38,963.58
  4. Step 4: Simplify right side
    67,242.30x = 3,616,072,318.36
  5. Step 5: Solve for x
    x = 3,616,072,318.36/67,242.30
  6. Step 6: Final answer
    x = 53,776.75

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1.5x scale

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.