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Finding the Fourth Proportional to 76,331.70, 114,465.15 and 36,900.90

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Solution

The fourth proportional to 76,331.70, 114,465.15 and 36,900.90 is: 55,335.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,331.70 : 114,465.15 = 36,900.90 : x
  2. Step 2: Convert to fraction form
    76,331.70/114,465.15 = 36,900.90/x
  3. Step 3: Cross multiply
    76,331.70x = 114,465.15 × 36,900.90
  4. Step 4: Simplify right side
    76,331.70x = 4,223,867,053.64
  5. Step 5: Solve for x
    x = 4,223,867,053.64/76,331.70
  6. Step 6: Final answer
    x = 55,335.69

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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.