Home / 78,387.48-117,581.19-22,228.08

Finding the Fourth Proportional to 78,387.48, 117,581.19 and 22,228.08

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Solution

The fourth proportional to 78,387.48, 117,581.19 and 22,228.08 is: 33,342.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,387.48 : 117,581.19 = 22,228.08 : x
  2. Step 2: Convert to fraction form
    78,387.48/117,581.19 = 22,228.08/x
  3. Step 3: Cross multiply
    78,387.48x = 117,581.19 × 22,228.08
  4. Step 4: Simplify right side
    78,387.48x = 2,613,603,703.09
  5. Step 5: Solve for x
    x = 2,613,603,703.09/78,387.48
  6. Step 6: Final answer
    x = 33,342.10

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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.