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Finding the Fourth Proportional to 55,477.20, 83,215.80 and 18,541.20

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Solution

The fourth proportional to 55,477.20, 83,215.80 and 18,541.20 is: 27,811.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,477.20 : 83,215.80 = 18,541.20 : x
  2. Step 2: Convert to fraction form
    55,477.20/83,215.80 = 18,541.20/x
  3. Step 3: Cross multiply
    55,477.20x = 83,215.80 × 18,541.20
  4. Step 4: Simplify right side
    55,477.20x = 1,542,920,790.96
  5. Step 5: Solve for x
    x = 1,542,920,790.96/55,477.20
  6. Step 6: Final answer
    x = 27,811.80

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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.