Home / 72,066.11-99,454.57-39,805.22

Finding the Fourth Proportional to 72,066.11, 99,454.57 and 39,805.22

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Solution

The fourth proportional to 72,066.11, 99,454.57 and 39,805.22 is: 54,933.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,066.11 : 99,454.57 = 39,805.22 : x
  2. Step 2: Convert to fraction form
    72,066.11/99,454.57 = 39,805.22/x
  3. Step 3: Cross multiply
    72,066.11x = 99,454.57 × 39,805.22
  4. Step 4: Simplify right side
    72,066.11x = 3,958,811,187.98
  5. Step 5: Solve for x
    x = 3,958,811,187.98/72,066.11
  6. Step 6: Final answer
    x = 54,933.05

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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.