Home / 65,387.25-98,081.79-18,640.13

Finding the Fourth Proportional to 65,387.25, 98,081.79 and 18,640.13

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Solution

The fourth proportional to 65,387.25, 98,081.79 and 18,640.13 is: 27,960.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,387.25 : 98,081.79 = 18,640.13 : x
  2. Step 2: Convert to fraction form
    65,387.25/98,081.79 = 18,640.13/x
  3. Step 3: Cross multiply
    65,387.25x = 98,081.79 × 18,640.13
  4. Step 4: Simplify right side
    65,387.25x = 1,828,256,755.92
  5. Step 5: Solve for x
    x = 1,828,256,755.92/65,387.25
  6. Step 6: Final answer
    x = 27,960.45

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1.5x scale

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.