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Finding the Fourth Proportional to 37,009.80, 55,449.90 and 30,400.20

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Solution

The fourth proportional to 37,009.80, 55,449.90 and 30,400.20 is: 45,547.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,009.80 : 55,449.90 = 30,400.20 : x
  2. Step 2: Convert to fraction form
    37,009.80/55,449.90 = 30,400.20/x
  3. Step 3: Cross multiply
    37,009.80x = 55,449.90 × 30,400.20
  4. Step 4: Simplify right side
    37,009.80x = 1,685,688,049.98
  5. Step 5: Solve for x
    x = 1,685,688,049.98/37,009.80
  6. Step 6: Final answer
    x = 45,547.07

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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.