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Finding the Fourth Proportional to 66,085.20, 98,836.20 and 55,587.60

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Solution

The fourth proportional to 66,085.20, 98,836.20 and 55,587.60 is: 83,136.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,085.20 : 98,836.20 = 55,587.60 : x
  2. Step 2: Convert to fraction form
    66,085.20/98,836.20 = 55,587.60/x
  3. Step 3: Cross multiply
    66,085.20x = 98,836.20 × 55,587.60
  4. Step 4: Simplify right side
    66,085.20x = 5,494,067,151.12
  5. Step 5: Solve for x
    x = 5,494,067,151.12/66,085.20
  6. Step 6: Final answer
    x = 83,136.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.