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Finding the Fourth Proportional to 85,371.66, 117,818.04 and 47,648.34

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Solution

The fourth proportional to 85,371.66, 117,818.04 and 47,648.34 is: 65,757.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,371.66 : 117,818.04 = 47,648.34 : x
  2. Step 2: Convert to fraction form
    85,371.66/117,818.04 = 47,648.34/x
  3. Step 3: Cross multiply
    85,371.66x = 117,818.04 × 47,648.34
  4. Step 4: Simplify right side
    85,371.66x = 5,613,834,028.05
  5. Step 5: Solve for x
    x = 5,613,834,028.05/85,371.66
  6. Step 6: Final answer
    x = 65,757.58

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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.