Home / 78,381.49-117,603.39-25,081.68

Finding the Fourth Proportional to 78,381.49, 117,603.39 and 25,081.68

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Solution

The fourth proportional to 78,381.49, 117,603.39 and 25,081.68 is: 37,632.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,381.49 : 117,603.39 = 25,081.68 : x
  2. Step 2: Convert to fraction form
    78,381.49/117,603.39 = 25,081.68/x
  3. Step 3: Cross multiply
    78,381.49x = 117,603.39 × 25,081.68
  4. Step 4: Simplify right side
    78,381.49x = 2,949,689,881.47
  5. Step 5: Solve for x
    x = 2,949,689,881.47/78,381.49
  6. Step 6: Final answer
    x = 37,632.48

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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.