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Finding the Fourth Proportional to 54,403.58, 81,620.61 and 19,346.78

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Solution

The fourth proportional to 54,403.58, 81,620.61 and 19,346.78 is: 29,025.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,403.58 : 81,620.61 = 19,346.78 : x
  2. Step 2: Convert to fraction form
    54,403.58/81,620.61 = 19,346.78/x
  3. Step 3: Cross multiply
    54,403.58x = 81,620.61 × 19,346.78
  4. Step 4: Simplify right side
    54,403.58x = 1,579,095,985.14
  5. Step 5: Solve for x
    x = 1,579,095,985.14/54,403.58
  6. Step 6: Final answer
    x = 29,025.59

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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.