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Finding the Fourth Proportional to 66,833.51, 92,179.62 and 42,947.21

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Solution

The fourth proportional to 66,833.51, 92,179.62 and 42,947.21 is: 59,234.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,833.51 : 92,179.62 = 42,947.21 : x
  2. Step 2: Convert to fraction form
    66,833.51/92,179.62 = 42,947.21/x
  3. Step 3: Cross multiply
    66,833.51x = 92,179.62 × 42,947.21
  4. Step 4: Simplify right side
    66,833.51x = 3,958,857,728.31
  5. Step 5: Solve for x
    x = 3,958,857,728.31/66,833.51
  6. Step 6: Final answer
    x = 59,234.63

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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.