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Finding the Fourth Proportional to 76,677.70, 115,065.72 and 37,213.30

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Solution

The fourth proportional to 76,677.70, 115,065.72 and 37,213.30 is: 55,843.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,677.70 : 115,065.72 = 37,213.30 : x
  2. Step 2: Convert to fraction form
    76,677.70/115,065.72 = 37,213.30/x
  3. Step 3: Cross multiply
    76,677.70x = 115,065.72 × 37,213.30
  4. Step 4: Simplify right side
    76,677.70x = 4,281,975,158.08
  5. Step 5: Solve for x
    x = 4,281,975,158.08/76,677.70
  6. Step 6: Final answer
    x = 55,843.81

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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.