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Finding the Fourth Proportional to 68,145.31, 94,039.80 and 37,930.15

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Solution

The fourth proportional to 68,145.31, 94,039.80 and 37,930.15 is: 52,343.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,145.31 : 94,039.80 = 37,930.15 : x
  2. Step 2: Convert to fraction form
    68,145.31/94,039.80 = 37,930.15/x
  3. Step 3: Cross multiply
    68,145.31x = 94,039.80 × 37,930.15
  4. Step 4: Simplify right side
    68,145.31x = 3,566,943,249.77
  5. Step 5: Solve for x
    x = 3,566,943,249.77/68,145.31
  6. Step 6: Final answer
    x = 52,343.20

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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.