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Finding the Fourth Proportional to 73,113.75, 100,897.11 and 39,579.75

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Solution

The fourth proportional to 73,113.75, 100,897.11 and 39,579.75 is: 54,620.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,113.75 : 100,897.11 = 39,579.75 : x
  2. Step 2: Convert to fraction form
    73,113.75/100,897.11 = 39,579.75/x
  3. Step 3: Cross multiply
    73,113.75x = 100,897.11 × 39,579.75
  4. Step 4: Simplify right side
    73,113.75x = 3,993,482,389.52
  5. Step 5: Solve for x
    x = 3,993,482,389.52/73,113.75
  6. Step 6: Final answer
    x = 54,620.13

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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.