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Finding the Fourth Proportional to 76,439.30, 114,768.30 and 54,350.60

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Solution

The fourth proportional to 76,439.30, 114,768.30 and 54,350.60 is: 81,603.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,439.30 : 114,768.30 = 54,350.60 : x
  2. Step 2: Convert to fraction form
    76,439.30/114,768.30 = 54,350.60/x
  3. Step 3: Cross multiply
    76,439.30x = 114,768.30 × 54,350.60
  4. Step 4: Simplify right side
    76,439.30x = 6,237,725,965.98
  5. Step 5: Solve for x
    x = 6,237,725,965.98/76,439.30
  6. Step 6: Final answer
    x = 81,603.65

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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.