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Finding the Fourth Proportional to 54,498.40, 81,750.30 and 28,254.40

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Solution

The fourth proportional to 54,498.40, 81,750.30 and 28,254.40 is: 42,383.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,498.40 : 81,750.30 = 28,254.40 : x
  2. Step 2: Convert to fraction form
    54,498.40/81,750.30 = 28,254.40/x
  3. Step 3: Cross multiply
    54,498.40x = 81,750.30 × 28,254.40
  4. Step 4: Simplify right side
    54,498.40x = 2,309,805,676.32
  5. Step 5: Solve for x
    x = 2,309,805,676.32/54,498.40
  6. Step 6: Final answer
    x = 42,383.00

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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.