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Finding the Fourth Proportional to 30,136.76, 45,201.66 and 7,951.91

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Solution

The fourth proportional to 30,136.76, 45,201.66 and 7,951.91 is: 11,926.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,136.76 : 45,201.66 = 7,951.91 : x
  2. Step 2: Convert to fraction form
    30,136.76/45,201.66 = 7,951.91/x
  3. Step 3: Cross multiply
    30,136.76x = 45,201.66 × 7,951.91
  4. Step 4: Simplify right side
    30,136.76x = 359,439,532.17
  5. Step 5: Solve for x
    x = 359,439,532.17/30,136.76
  6. Step 6: Final answer
    x = 11,926.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.