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Finding the Fourth Proportional to 37,705.80, 52,039.08 and 21,790.92

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Solution

The fourth proportional to 37,705.80, 52,039.08 and 21,790.92 is: 30,074.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,705.80 : 52,039.08 = 21,790.92 : x
  2. Step 2: Convert to fraction form
    37,705.80/52,039.08 = 21,790.92/x
  3. Step 3: Cross multiply
    37,705.80x = 52,039.08 × 21,790.92
  4. Step 4: Simplify right side
    37,705.80x = 1,133,979,429.15
  5. Step 5: Solve for x
    x = 1,133,979,429.15/37,705.80
  6. Step 6: Final answer
    x = 30,074.40

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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.