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Finding the Fourth Proportional to 76,770.48, 115,155.96 and 21,366.48

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Solution

The fourth proportional to 76,770.48, 115,155.96 and 21,366.48 is: 32,049.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,770.48 : 115,155.96 = 21,366.48 : x
  2. Step 2: Convert to fraction form
    76,770.48/115,155.96 = 21,366.48/x
  3. Step 3: Cross multiply
    76,770.48x = 115,155.96 × 21,366.48
  4. Step 4: Simplify right side
    76,770.48x = 2,460,477,516.22
  5. Step 5: Solve for x
    x = 2,460,477,516.22/76,770.48
  6. Step 6: Final answer
    x = 32,049.79

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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.