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Finding the Fourth Proportional to 85,361.70, 117,799.14 and 47,121.24

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Solution

The fourth proportional to 85,361.70, 117,799.14 and 47,121.24 is: 65,027.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,361.70 : 117,799.14 = 47,121.24 : x
  2. Step 2: Convert to fraction form
    85,361.70/117,799.14 = 47,121.24/x
  3. Step 3: Cross multiply
    85,361.70x = 117,799.14 × 47,121.24
  4. Step 4: Simplify right side
    85,361.70x = 5,550,841,547.73
  5. Step 5: Solve for x
    x = 5,550,841,547.73/85,361.70
  6. Step 6: Final answer
    x = 65,027.31

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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.