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Finding the Fourth Proportional to 68,154.76, 94,043.16 and 39,079

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Solution

The fourth proportional to 68,154.76, 94,043.16 and 39,079 is: 53,923.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,154.76 : 94,043.16 = 39,079 : x
  2. Step 2: Convert to fraction form
    68,154.76/94,043.16 = 39,079/x
  3. Step 3: Cross multiply
    68,154.76x = 94,043.16 × 39,079
  4. Step 4: Simplify right side
    68,154.76x = 3,675,112,649.64
  5. Step 5: Solve for x
    x = 3,675,112,649.64/68,154.76
  6. Step 6: Final answer
    x = 53,923.05

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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.