Home / 78,620.02-108,601.77-62,815.30

Finding the Fourth Proportional to 78,620.02, 108,601.77 and 62,815.30

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Solution

The fourth proportional to 78,620.02, 108,601.77 and 62,815.30 is: 86,769.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,620.02 : 108,601.77 = 62,815.30 : x
  2. Step 2: Convert to fraction form
    78,620.02/108,601.77 = 62,815.30/x
  3. Step 3: Cross multiply
    78,620.02x = 108,601.77 × 62,815.30
  4. Step 4: Simplify right side
    78,620.02x = 6,821,852,763.08
  5. Step 5: Solve for x
    x = 6,821,852,763.08/78,620.02
  6. Step 6: Final answer
    x = 86,769.92

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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.