Home / 66,112.08-91,221.84-39,263.01

Finding the Fourth Proportional to 66,112.08, 91,221.84 and 39,263.01

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Solution

The fourth proportional to 66,112.08, 91,221.84 and 39,263.01 is: 54,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,112.08 : 91,221.84 = 39,263.01 : x
  2. Step 2: Convert to fraction form
    66,112.08/91,221.84 = 39,263.01/x
  3. Step 3: Cross multiply
    66,112.08x = 91,221.84 × 39,263.01
  4. Step 4: Simplify right side
    66,112.08x = 3,581,644,016.14
  5. Step 5: Solve for x
    x = 3,581,644,016.14/66,112.08
  6. Step 6: Final answer
    x = 54,175.33

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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.