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Finding the Fourth Proportional to 61,698.34, 85,142.23 and 34,839.96

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Solution

The fourth proportional to 61,698.34, 85,142.23 and 34,839.96 is: 48,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,698.34 : 85,142.23 = 34,839.96 : x
  2. Step 2: Convert to fraction form
    61,698.34/85,142.23 = 34,839.96/x
  3. Step 3: Cross multiply
    61,698.34x = 85,142.23 × 34,839.96
  4. Step 4: Simplify right side
    61,698.34x = 2,966,351,887.51
  5. Step 5: Solve for x
    x = 2,966,351,887.51/61,698.34
  6. Step 6: Final answer
    x = 48,078.31

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.