Home / 54,665.18-81,997.79-42,203.40

Finding the Fourth Proportional to 54,665.18, 81,997.79 and 42,203.40

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Solution

The fourth proportional to 54,665.18, 81,997.79 and 42,203.40 is: 63,305.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,665.18 : 81,997.79 = 42,203.40 : x
  2. Step 2: Convert to fraction form
    54,665.18/81,997.79 = 42,203.40/x
  3. Step 3: Cross multiply
    54,665.18x = 81,997.79 × 42,203.40
  4. Step 4: Simplify right side
    54,665.18x = 3,460,585,011.98
  5. Step 5: Solve for x
    x = 3,460,585,011.98/54,665.18
  6. Step 6: Final answer
    x = 63,305.11

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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.