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Finding the Fourth Proportional to 85,313.48, 117,731.79 and 47,073.38

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Solution

The fourth proportional to 85,313.48, 117,731.79 and 47,073.38 is: 64,960.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,313.48 : 117,731.79 = 47,073.38 : x
  2. Step 2: Convert to fraction form
    85,313.48/117,731.79 = 47,073.38/x
  3. Step 3: Cross multiply
    85,313.48x = 117,731.79 × 47,073.38
  4. Step 4: Simplify right side
    85,313.48x = 5,542,032,700.09
  5. Step 5: Solve for x
    x = 5,542,032,700.09/85,313.48
  6. Step 6: Final answer
    x = 64,960.81

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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.