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Finding the Fourth Proportional to 90,299.91, 124,614.81 and 54,483

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Solution

The fourth proportional to 90,299.91, 124,614.81 and 54,483 is: 75,187.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,299.91 : 124,614.81 = 54,483 : x
  2. Step 2: Convert to fraction form
    90,299.91/124,614.81 = 54,483/x
  3. Step 3: Cross multiply
    90,299.91x = 124,614.81 × 54,483
  4. Step 4: Simplify right side
    90,299.91x = 6,789,388,693.23
  5. Step 5: Solve for x
    x = 6,789,388,693.23/90,299.91
  6. Step 6: Final answer
    x = 75,187.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.