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Finding the Fourth Proportional to 54,003.30, 81,004.95 and 51,816.30

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Solution

The fourth proportional to 54,003.30, 81,004.95 and 51,816.30 is: 77,724.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,003.30 : 81,004.95 = 51,816.30 : x
  2. Step 2: Convert to fraction form
    54,003.30/81,004.95 = 51,816.30/x
  3. Step 3: Cross multiply
    54,003.30x = 81,004.95 × 51,816.30
  4. Step 4: Simplify right side
    54,003.30x = 4,197,376,790.69
  5. Step 5: Solve for x
    x = 4,197,376,790.69/54,003.30
  6. Step 6: Final answer
    x = 77,724.45

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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.