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Finding the Fourth Proportional to 66,382.40, 91,603.44 and 39,526.88

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Solution

The fourth proportional to 66,382.40, 91,603.44 and 39,526.88 is: 54,544.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,382.40 : 91,603.44 = 39,526.88 : x
  2. Step 2: Convert to fraction form
    66,382.40/91,603.44 = 39,526.88/x
  3. Step 3: Cross multiply
    66,382.40x = 91,603.44 × 39,526.88
  4. Step 4: Simplify right side
    66,382.40x = 3,620,798,180.47
  5. Step 5: Solve for x
    x = 3,620,798,180.47/66,382.40
  6. Step 6: Final answer
    x = 54,544.55

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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.