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Finding the Fourth Proportional to 55,439.96, 83,192.74 and 20,404.22

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Solution

The fourth proportional to 55,439.96, 83,192.74 and 20,404.22 is: 30,618.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,439.96 : 83,192.74 = 20,404.22 : x
  2. Step 2: Convert to fraction form
    55,439.96/83,192.74 = 20,404.22/x
  3. Step 3: Cross multiply
    55,439.96x = 83,192.74 × 20,404.22
  4. Step 4: Simplify right side
    55,439.96x = 1,697,482,502.39
  5. Step 5: Solve for x
    x = 1,697,482,502.39/55,439.96
  6. Step 6: Final answer
    x = 30,618.40

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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.