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Finding the Fourth Proportional to 84,221.85, 126,265.71 and 48,642.69

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Solution

The fourth proportional to 84,221.85, 126,265.71 and 48,642.69 is: 72,925.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,221.85 : 126,265.71 = 48,642.69 : x
  2. Step 2: Convert to fraction form
    84,221.85/126,265.71 = 48,642.69/x
  3. Step 3: Cross multiply
    84,221.85x = 126,265.71 × 48,642.69
  4. Step 4: Simplify right side
    84,221.85x = 6,141,903,789.16
  5. Step 5: Solve for x
    x = 6,141,903,789.16/84,221.85
  6. Step 6: Final answer
    x = 72,925.30

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1.5x scale

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.