Home / 78,240.48-117,378-43,162.08

Finding the Fourth Proportional to 78,240.48, 117,378 and 43,162.08

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Solution

The fourth proportional to 78,240.48, 117,378 and 43,162.08 is: 64,752.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,240.48 : 117,378 = 43,162.08 : x
  2. Step 2: Convert to fraction form
    78,240.48/117,378 = 43,162.08/x
  3. Step 3: Cross multiply
    78,240.48x = 117,378 × 43,162.08
  4. Step 4: Simplify right side
    78,240.48x = 5,066,278,626.24
  5. Step 5: Solve for x
    x = 5,066,278,626.24/78,240.48
  6. Step 6: Final answer
    x = 64,752.65

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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.