Home / 78,819.13-108,770-43,009.03

Finding the Fourth Proportional to 78,819.13, 108,770 and 43,009.03

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Solution

The fourth proportional to 78,819.13, 108,770 and 43,009.03 is: 59,352.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,819.13 : 108,770 = 43,009.03 : x
  2. Step 2: Convert to fraction form
    78,819.13/108,770 = 43,009.03/x
  3. Step 3: Cross multiply
    78,819.13x = 108,770 × 43,009.03
  4. Step 4: Simplify right side
    78,819.13x = 4,678,091,649.25
  5. Step 5: Solve for x
    x = 4,678,091,649.25/78,819.13
  6. Step 6: Final answer
    x = 59,352.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.