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Finding the Fourth Proportional to 66,145.68, 91,248.84 and 37,843.92

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Solution

The fourth proportional to 66,145.68, 91,248.84 and 37,843.92 is: 52,206.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,145.68 : 91,248.84 = 37,843.92 : x
  2. Step 2: Convert to fraction form
    66,145.68/91,248.84 = 37,843.92/x
  3. Step 3: Cross multiply
    66,145.68x = 91,248.84 × 37,843.92
  4. Step 4: Simplify right side
    66,145.68x = 3,453,213,801.05
  5. Step 5: Solve for x
    x = 3,453,213,801.05/66,145.68
  6. Step 6: Final answer
    x = 52,206.19

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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.