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Finding the Fourth Proportional to 85,672.82, 118,228.74 and 47,947.08

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Solution

The fourth proportional to 85,672.82, 118,228.74 and 47,947.08 is: 66,167.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,672.82 : 118,228.74 = 47,947.08 : x
  2. Step 2: Convert to fraction form
    85,672.82/118,228.74 = 47,947.08/x
  3. Step 3: Cross multiply
    85,672.82x = 118,228.74 × 47,947.08
  4. Step 4: Simplify right side
    85,672.82x = 5,668,722,855.08
  5. Step 5: Solve for x
    x = 5,668,722,855.08/85,672.82
  6. Step 6: Final answer
    x = 66,167.11

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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.