Home / 78,630.30-108,647.99-62,845.02

Finding the Fourth Proportional to 78,630.30, 108,647.99 and 62,845.02

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Solution

The fourth proportional to 78,630.30, 108,647.99 and 62,845.02 is: 86,836.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,630.30 : 108,647.99 = 62,845.02 : x
  2. Step 2: Convert to fraction form
    78,630.30/108,647.99 = 62,845.02/x
  3. Step 3: Cross multiply
    78,630.30x = 108,647.99 × 62,845.02
  4. Step 4: Simplify right side
    78,630.30x = 6,827,985,104.51
  5. Step 5: Solve for x
    x = 6,827,985,104.51/78,630.30
  6. Step 6: Final answer
    x = 86,836.56

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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.