Home / 54,298.89-81,428.36-18,751.16

Finding the Fourth Proportional to 54,298.89, 81,428.36 and 18,751.16

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Solution

The fourth proportional to 54,298.89, 81,428.36 and 18,751.16 is: 28,119.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,298.89 : 81,428.36 = 18,751.16 : x
  2. Step 2: Convert to fraction form
    54,298.89/81,428.36 = 18,751.16/x
  3. Step 3: Cross multiply
    54,298.89x = 81,428.36 × 18,751.16
  4. Step 4: Simplify right side
    54,298.89x = 1,526,876,316.71
  5. Step 5: Solve for x
    x = 1,526,876,316.71/54,298.89
  6. Step 6: Final answer
    x = 28,119.84

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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.