Home / 66,528.09-91,806.48-39,656.75

Finding the Fourth Proportional to 66,528.09, 91,806.48 and 39,656.75

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Solution

The fourth proportional to 66,528.09, 91,806.48 and 39,656.75 is: 54,724.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,528.09 : 91,806.48 = 39,656.75 : x
  2. Step 2: Convert to fraction form
    66,528.09/91,806.48 = 39,656.75/x
  3. Step 3: Cross multiply
    66,528.09x = 91,806.48 × 39,656.75
  4. Step 4: Simplify right side
    66,528.09x = 3,640,746,625.74
  5. Step 5: Solve for x
    x = 3,640,746,625.74/66,528.09
  6. Step 6: Final answer
    x = 54,724.95

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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.