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Finding the Fourth Proportional to 61,845.78, 85,347.19 and 34,987.73

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Solution

The fourth proportional to 61,845.78, 85,347.19 and 34,987.73 is: 48,283.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,845.78 : 85,347.19 = 34,987.73 : x
  2. Step 2: Convert to fraction form
    61,845.78/85,347.19 = 34,987.73/x
  3. Step 3: Cross multiply
    61,845.78x = 85,347.19 × 34,987.73
  4. Step 4: Simplify right side
    61,845.78x = 2,986,104,265.04
  5. Step 5: Solve for x
    x = 2,986,104,265.04/61,845.78
  6. Step 6: Final answer
    x = 48,283.07

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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.