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Finding the Fourth Proportional to 61,865.78, 85,374.42 and 33,570.86

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Solution

The fourth proportional to 61,865.78, 85,374.42 and 33,570.86 is: 46,327.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,865.78 : 85,374.42 = 33,570.86 : x
  2. Step 2: Convert to fraction form
    61,865.78/85,374.42 = 33,570.86/x
  3. Step 3: Cross multiply
    61,865.78x = 85,374.42 × 33,570.86
  4. Step 4: Simplify right side
    61,865.78x = 2,866,092,701.40
  5. Step 5: Solve for x
    x = 2,866,092,701.40/61,865.78
  6. Step 6: Final answer
    x = 46,327.59

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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.