Home / 78,918.22-108,903.18-43,101.64

Finding the Fourth Proportional to 78,918.22, 108,903.18 and 43,101.64

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Solution

The fourth proportional to 78,918.22, 108,903.18 and 43,101.64 is: 59,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,918.22 : 108,903.18 = 43,101.64 : x
  2. Step 2: Convert to fraction form
    78,918.22/108,903.18 = 43,101.64/x
  3. Step 3: Cross multiply
    78,918.22x = 108,903.18 × 43,101.64
  4. Step 4: Simplify right side
    78,918.22x = 4,693,905,659.22
  5. Step 5: Solve for x
    x = 4,693,905,659.22/78,918.22
  6. Step 6: Final answer
    x = 59,478.10

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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.