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Finding the Fourth Proportional to 73,479.75, 101,402.10 and 39,945.75

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Solution

The fourth proportional to 73,479.75, 101,402.10 and 39,945.75 is: 55,125.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,479.75 : 101,402.10 = 39,945.75 : x
  2. Step 2: Convert to fraction form
    73,479.75/101,402.10 = 39,945.75/x
  3. Step 3: Cross multiply
    73,479.75x = 101,402.10 × 39,945.75
  4. Step 4: Simplify right side
    73,479.75x = 4,050,582,936.08
  5. Step 5: Solve for x
    x = 4,050,582,936.08/73,479.75
  6. Step 6: Final answer
    x = 55,125.16

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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.