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Finding the Fourth Proportional to 85,370.63, 117,813.89 and 47,647.31

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Solution

The fourth proportional to 85,370.63, 117,813.89 and 47,647.31 is: 65,754.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,370.63 : 117,813.89 = 47,647.31 : x
  2. Step 2: Convert to fraction form
    85,370.63/117,813.89 = 47,647.31/x
  3. Step 3: Cross multiply
    85,370.63x = 117,813.89 × 47,647.31
  4. Step 4: Simplify right side
    85,370.63x = 5,613,514,469.18
  5. Step 5: Solve for x
    x = 5,613,514,469.18/85,370.63
  6. Step 6: Final answer
    x = 65,754.64

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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.