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Finding the Fourth Proportional to 76,993.10, 115,489.65 and 73,384.55

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Solution

The fourth proportional to 76,993.10, 115,489.65 and 73,384.55 is: 110,076.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,993.10 : 115,489.65 = 73,384.55 : x
  2. Step 2: Convert to fraction form
    76,993.10/115,489.65 = 73,384.55/x
  3. Step 3: Cross multiply
    76,993.10x = 115,489.65 × 73,384.55
  4. Step 4: Simplify right side
    76,993.10x = 8,475,155,994.91
  5. Step 5: Solve for x
    x = 8,475,155,994.91/76,993.10
  6. Step 6: Final answer
    x = 110,076.83

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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.