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Finding the Fourth Proportional to 61,691.74, 85,136.12 and 34,834.63

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Solution

The fourth proportional to 61,691.74, 85,136.12 and 34,834.63 is: 48,072.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,691.74 : 85,136.12 = 34,834.63 : x
  2. Step 2: Convert to fraction form
    61,691.74/85,136.12 = 34,834.63/x
  3. Step 3: Cross multiply
    61,691.74x = 85,136.12 × 34,834.63
  4. Step 4: Simplify right side
    61,691.74x = 2,965,685,239.84
  5. Step 5: Solve for x
    x = 2,965,685,239.84/61,691.74
  6. Step 6: Final answer
    x = 48,072.65

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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.