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Finding the Fourth Proportional to 66,095.46, 91,213.29 and 39,238.08

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Solution

The fourth proportional to 66,095.46, 91,213.29 and 39,238.08 is: 54,149.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,095.46 : 91,213.29 = 39,238.08 : x
  2. Step 2: Convert to fraction form
    66,095.46/91,213.29 = 39,238.08/x
  3. Step 3: Cross multiply
    66,095.46x = 91,213.29 × 39,238.08
  4. Step 4: Simplify right side
    66,095.46x = 3,579,034,370.08
  5. Step 5: Solve for x
    x = 3,579,034,370.08/66,095.46
  6. Step 6: Final answer
    x = 54,149.47

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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.