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Finding the Fourth Proportional to 80,670.96, 111,308.13 and 48,390.84

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Solution

The fourth proportional to 80,670.96, 111,308.13 and 48,390.84 is: 66,768.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,670.96 : 111,308.13 = 48,390.84 : x
  2. Step 2: Convert to fraction form
    80,670.96/111,308.13 = 48,390.84/x
  3. Step 3: Cross multiply
    80,670.96x = 111,308.13 × 48,390.84
  4. Step 4: Simplify right side
    80,670.96x = 5,386,293,909.53
  5. Step 5: Solve for x
    x = 5,386,293,909.53/80,670.96
  6. Step 6: Final answer
    x = 66,768.68

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1.5x scale

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.