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Finding the Fourth Proportional to 54,653.99, 81,978.35 and 15,210.23

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Solution

The fourth proportional to 54,653.99, 81,978.35 and 15,210.23 is: 22,814.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,653.99 : 81,978.35 = 15,210.23 : x
  2. Step 2: Convert to fraction form
    54,653.99/81,978.35 = 15,210.23/x
  3. Step 3: Cross multiply
    54,653.99x = 81,978.35 × 15,210.23
  4. Step 4: Simplify right side
    54,653.99x = 1,246,909,072.58
  5. Step 5: Solve for x
    x = 1,246,909,072.58/54,653.99
  6. Step 6: Final answer
    x = 22,814.60

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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.