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Finding the Fourth Proportional to 66,085.16, 91,198.17 and 35,870.74

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Solution

The fourth proportional to 66,085.16, 91,198.17 and 35,870.74 is: 49,501.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,085.16 : 91,198.17 = 35,870.74 : x
  2. Step 2: Convert to fraction form
    66,085.16/91,198.17 = 35,870.74/x
  3. Step 3: Cross multiply
    66,085.16x = 91,198.17 × 35,870.74
  4. Step 4: Simplify right side
    66,085.16x = 3,271,345,616.55
  5. Step 5: Solve for x
    x = 3,271,345,616.55/66,085.16
  6. Step 6: Final answer
    x = 49,501.97

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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.