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Finding the Fourth Proportional to 85,383.31, 117,836.01 and 47,146.65

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Solution

The fourth proportional to 85,383.31, 117,836.01 and 47,146.65 is: 65,066.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,383.31 : 117,836.01 = 47,146.65 : x
  2. Step 2: Convert to fraction form
    85,383.31/117,836.01 = 47,146.65/x
  3. Step 3: Cross multiply
    85,383.31x = 117,836.01 × 47,146.65
  4. Step 4: Simplify right side
    85,383.31x = 5,555,572,885.13
  5. Step 5: Solve for x
    x = 5,555,572,885.13/85,383.31
  6. Step 6: Final answer
    x = 65,066.27

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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.