Home / 54,187.95-81,296.10-20,909.10

Finding the Fourth Proportional to 54,187.95, 81,296.10 and 20,909.10

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Solution

The fourth proportional to 54,187.95, 81,296.10 and 20,909.10 is: 31,369.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,187.95 : 81,296.10 = 20,909.10 : x
  2. Step 2: Convert to fraction form
    54,187.95/81,296.10 = 20,909.10/x
  3. Step 3: Cross multiply
    54,187.95x = 81,296.10 × 20,909.10
  4. Step 4: Simplify right side
    54,187.95x = 1,699,828,284.51
  5. Step 5: Solve for x
    x = 1,699,828,284.51/54,187.95
  6. Step 6: Final answer
    x = 31,369.12

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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.