Home / 66,187.65-91,341.18-38,958.81

Finding the Fourth Proportional to 66,187.65, 91,341.18 and 38,958.81

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Solution

The fourth proportional to 66,187.65, 91,341.18 and 38,958.81 is: 53,764.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,187.65 : 91,341.18 = 38,958.81 : x
  2. Step 2: Convert to fraction form
    66,187.65/91,341.18 = 38,958.81/x
  3. Step 3: Cross multiply
    66,187.65x = 91,341.18 × 38,958.81
  4. Step 4: Simplify right side
    66,187.65x = 3,558,543,676.80
  5. Step 5: Solve for x
    x = 3,558,543,676.80/66,187.65
  6. Step 6: Final answer
    x = 53,764.47

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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.