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Finding the Fourth Proportional to 85,900.78, 118,542.72 and 48,175.06

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Solution

The fourth proportional to 85,900.78, 118,542.72 and 48,175.06 is: 66,481.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,900.78 : 118,542.72 = 48,175.06 : x
  2. Step 2: Convert to fraction form
    85,900.78/118,542.72 = 48,175.06/x
  3. Step 3: Cross multiply
    85,900.78x = 118,542.72 × 48,175.06
  4. Step 4: Simplify right side
    85,900.78x = 5,710,802,648.56
  5. Step 5: Solve for x
    x = 5,710,802,648.56/85,900.78
  6. Step 6: Final answer
    x = 66,481.38

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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.