Home / 78,406.13-117,616.48-22,247.61

Finding the Fourth Proportional to 78,406.13, 117,616.48 and 22,247.61

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Solution

The fourth proportional to 78,406.13, 117,616.48 and 22,247.61 is: 33,373.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,406.13 : 117,616.48 = 22,247.61 : x
  2. Step 2: Convert to fraction form
    78,406.13/117,616.48 = 22,247.61/x
  3. Step 3: Cross multiply
    78,406.13x = 117,616.48 × 22,247.61
  4. Step 4: Simplify right side
    78,406.13x = 2,616,685,804.10
  5. Step 5: Solve for x
    x = 2,616,685,804.10/78,406.13
  6. Step 6: Final answer
    x = 33,373.49

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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.