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Finding the Fourth Proportional to 54,486.60, 81,710.70 and 19,427.40

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Solution

The fourth proportional to 54,486.60, 81,710.70 and 19,427.40 is: 29,134.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,486.60 : 81,710.70 = 19,427.40 : x
  2. Step 2: Convert to fraction form
    54,486.60/81,710.70 = 19,427.40/x
  3. Step 3: Cross multiply
    54,486.60x = 81,710.70 × 19,427.40
  4. Step 4: Simplify right side
    54,486.60x = 1,587,426,453.18
  5. Step 5: Solve for x
    x = 1,587,426,453.18/54,486.60
  6. Step 6: Final answer
    x = 29,134.25

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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.