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Finding the Fourth Proportional to 54,359.75, 75,021.03 and 30,490.94

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Solution

The fourth proportional to 54,359.75, 75,021.03 and 30,490.94 is: 42,080.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,359.75 : 75,021.03 = 30,490.94 : x
  2. Step 2: Convert to fraction form
    54,359.75/75,021.03 = 30,490.94/x
  3. Step 3: Cross multiply
    54,359.75x = 75,021.03 × 30,490.94
  4. Step 4: Simplify right side
    54,359.75x = 2,287,461,349.36
  5. Step 5: Solve for x
    x = 2,287,461,349.36/54,359.75
  6. Step 6: Final answer
    x = 42,080.06

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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.