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Finding the Fourth Proportional to 61,396.28, 84,734.10 and 34,539.80

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Solution

The fourth proportional to 61,396.28, 84,734.10 and 34,539.80 is: 47,668.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,396.28 : 84,734.10 = 34,539.80 : x
  2. Step 2: Convert to fraction form
    61,396.28/84,734.10 = 34,539.80/x
  3. Step 3: Cross multiply
    61,396.28x = 84,734.10 × 34,539.80
  4. Step 4: Simplify right side
    61,396.28x = 2,926,698,867.18
  5. Step 5: Solve for x
    x = 2,926,698,867.18/61,396.28
  6. Step 6: Final answer
    x = 47,668.99

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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.