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Finding the Fourth Proportional to 67,045.92, 92,540 and 38,768

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Solution

The fourth proportional to 67,045.92, 92,540 and 38,768 is: 53,509.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,045.92 : 92,540 = 38,768 : x
  2. Step 2: Convert to fraction form
    67,045.92/92,540 = 38,768/x
  3. Step 3: Cross multiply
    67,045.92x = 92,540 × 38,768
  4. Step 4: Simplify right side
    67,045.92x = 3,587,590,720
  5. Step 5: Solve for x
    x = 3,587,590,720/67,045.92
  6. Step 6: Final answer
    x = 53,509.46

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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.