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Finding the Fourth Proportional to 61,987, 85,531.48 and 35,123.96

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Solution

The fourth proportional to 61,987, 85,531.48 and 35,123.96 is: 48,465.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,987 : 85,531.48 = 35,123.96 : x
  2. Step 2: Convert to fraction form
    61,987/85,531.48 = 35,123.96/x
  3. Step 3: Cross multiply
    61,987x = 85,531.48 × 35,123.96
  4. Step 4: Simplify right side
    61,987x = 3,004,204,282.26
  5. Step 5: Solve for x
    x = 3,004,204,282.26/61,987
  6. Step 6: Final answer
    x = 48,465.07

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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.