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Finding the Fourth Proportional to 68,163.96, 94,079.76 and 39,488.28

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Solution

The fourth proportional to 68,163.96, 94,079.76 and 39,488.28 is: 54,501.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,163.96 : 94,079.76 = 39,488.28 : x
  2. Step 2: Convert to fraction form
    68,163.96/94,079.76 = 39,488.28/x
  3. Step 3: Cross multiply
    68,163.96x = 94,079.76 × 39,488.28
  4. Step 4: Simplify right side
    68,163.96x = 3,715,047,905.21
  5. Step 5: Solve for x
    x = 3,715,047,905.21/68,163.96
  6. Step 6: Final answer
    x = 54,501.64

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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.