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Finding the Fourth Proportional to 76,136.66, 105,098.82 and 51,613.10

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Solution

The fourth proportional to 76,136.66, 105,098.82 and 51,613.10 is: 71,246.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,136.66 : 105,098.82 = 51,613.10 : x
  2. Step 2: Convert to fraction form
    76,136.66/105,098.82 = 51,613.10/x
  3. Step 3: Cross multiply
    76,136.66x = 105,098.82 × 51,613.10
  4. Step 4: Simplify right side
    76,136.66x = 5,424,475,906.54
  5. Step 5: Solve for x
    x = 5,424,475,906.54/76,136.66
  6. Step 6: Final answer
    x = 71,246.57

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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.