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Finding the Fourth Proportional to 78,832.97, 118,097.02 and 66,030.71

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Solution

The fourth proportional to 78,832.97, 118,097.02 and 66,030.71 is: 98,918.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,832.97 : 118,097.02 = 66,030.71 : x
  2. Step 2: Convert to fraction form
    78,832.97/118,097.02 = 66,030.71/x
  3. Step 3: Cross multiply
    78,832.97x = 118,097.02 × 66,030.71
  4. Step 4: Simplify right side
    78,832.97x = 7,798,029,749.33
  5. Step 5: Solve for x
    x = 7,798,029,749.33/78,832.97
  6. Step 6: Final answer
    x = 98,918.39

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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.