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Finding the Fourth Proportional to 76,604.80, 114,907.20 and 56,921.80

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Solution

The fourth proportional to 76,604.80, 114,907.20 and 56,921.80 is: 85,382.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,604.80 : 114,907.20 = 56,921.80 : x
  2. Step 2: Convert to fraction form
    76,604.80/114,907.20 = 56,921.80/x
  3. Step 3: Cross multiply
    76,604.80x = 114,907.20 × 56,921.80
  4. Step 4: Simplify right side
    76,604.80x = 6,540,724,656.96
  5. Step 5: Solve for x
    x = 6,540,724,656.96/76,604.80
  6. Step 6: Final answer
    x = 85,382.70

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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.