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Finding the Fourth Proportional to 54,903.88, 81,649.49 and 53,154.28

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Solution

The fourth proportional to 54,903.88, 81,649.49 and 53,154.28 is: 79,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,903.88 : 81,649.49 = 53,154.28 : x
  2. Step 2: Convert to fraction form
    54,903.88/81,649.49 = 53,154.28/x
  3. Step 3: Cross multiply
    54,903.88x = 81,649.49 × 53,154.28
  4. Step 4: Simplify right side
    54,903.88x = 4,340,019,853.32
  5. Step 5: Solve for x
    x = 4,340,019,853.32/54,903.88
  6. Step 6: Final answer
    x = 79,047.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.