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Finding the Fourth Proportional to 54,291.20, 81,444.90 and 19,228.10

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Solution

The fourth proportional to 54,291.20, 81,444.90 and 19,228.10 is: 28,845.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,291.20 : 81,444.90 = 19,228.10 : x
  2. Step 2: Convert to fraction form
    54,291.20/81,444.90 = 19,228.10/x
  3. Step 3: Cross multiply
    54,291.20x = 81,444.90 × 19,228.10
  4. Step 4: Simplify right side
    54,291.20x = 1,566,030,681.69
  5. Step 5: Solve for x
    x = 1,566,030,681.69/54,291.20
  6. Step 6: Final answer
    x = 28,845.02

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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.