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Finding the Fourth Proportional to 57,136.14, 78,835.14 and 34,478.82

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Solution

The fourth proportional to 57,136.14, 78,835.14 and 34,478.82 is: 47,573.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,136.14 : 78,835.14 = 34,478.82 : x
  2. Step 2: Convert to fraction form
    57,136.14/78,835.14 = 34,478.82/x
  3. Step 3: Cross multiply
    57,136.14x = 78,835.14 × 34,478.82
  4. Step 4: Simplify right side
    57,136.14x = 2,718,142,601.73
  5. Step 5: Solve for x
    x = 2,718,142,601.73/57,136.14
  6. Step 6: Final answer
    x = 47,573.09

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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.