Home / 78,734.41-108,655.55-48,539.68

Finding the Fourth Proportional to 78,734.41, 108,655.55 and 48,539.68

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Solution

The fourth proportional to 78,734.41, 108,655.55 and 48,539.68 is: 66,986.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,734.41 : 108,655.55 = 48,539.68 : x
  2. Step 2: Convert to fraction form
    78,734.41/108,655.55 = 48,539.68/x
  3. Step 3: Cross multiply
    78,734.41x = 108,655.55 × 48,539.68
  4. Step 4: Simplify right side
    78,734.41x = 5,274,105,476.93
  5. Step 5: Solve for x
    x = 5,274,105,476.93/78,734.41
  6. Step 6: Final answer
    x = 66,986.03

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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.