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Finding the Fourth Proportional to 67,100, 92,598 and 38,807.51

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Solution

The fourth proportional to 67,100, 92,598 and 38,807.51 is: 53,554.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,100 : 92,598 = 38,807.51 : x
  2. Step 2: Convert to fraction form
    67,100/92,598 = 38,807.51/x
  3. Step 3: Cross multiply
    67,100x = 92,598 × 38,807.51
  4. Step 4: Simplify right side
    67,100x = 3,593,497,810.98
  5. Step 5: Solve for x
    x = 3,593,497,810.98/67,100
  6. Step 6: Final answer
    x = 53,554.36

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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.