Home / 84,530.68-126,778.18-54,454.84

Finding the Fourth Proportional to 84,530.68, 126,778.18 and 54,454.84

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Solution

The fourth proportional to 84,530.68, 126,778.18 and 54,454.84 is: 81,670.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,530.68 : 126,778.18 = 54,454.84 : x
  2. Step 2: Convert to fraction form
    84,530.68/126,778.18 = 54,454.84/x
  3. Step 3: Cross multiply
    84,530.68x = 126,778.18 × 54,454.84
  4. Step 4: Simplify right side
    84,530.68x = 6,903,685,507.39
  5. Step 5: Solve for x
    x = 6,903,685,507.39/84,530.68
  6. Step 6: Final answer
    x = 81,670.77

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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.