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Finding the Fourth Proportional to 66,930, 92,363.40 and 37,122

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Solution

The fourth proportional to 66,930, 92,363.40 and 37,122 is: 51,228.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,930 : 92,363.40 = 37,122 : x
  2. Step 2: Convert to fraction form
    66,930/92,363.40 = 37,122/x
  3. Step 3: Cross multiply
    66,930x = 92,363.40 × 37,122
  4. Step 4: Simplify right side
    66,930x = 3,428,714,134.80
  5. Step 5: Solve for x
    x = 3,428,714,134.80/66,930
  6. Step 6: Final answer
    x = 51,228.36

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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.