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Finding the Fourth Proportional to 37,879.70, 52,275.59 and 21,112.70

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Solution

The fourth proportional to 37,879.70, 52,275.59 and 21,112.70 is: 29,136.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,879.70 : 52,275.59 = 21,112.70 : x
  2. Step 2: Convert to fraction form
    37,879.70/52,275.59 = 21,112.70/x
  3. Step 3: Cross multiply
    37,879.70x = 52,275.59 × 21,112.70
  4. Step 4: Simplify right side
    37,879.70x = 1,103,678,482.05
  5. Step 5: Solve for x
    x = 1,103,678,482.05/37,879.70
  6. Step 6: Final answer
    x = 29,136.41

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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.