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Finding the Fourth Proportional to 76,300.80, 114,475.20 and 36,859.20

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Solution

The fourth proportional to 76,300.80, 114,475.20 and 36,859.20 is: 55,300.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,300.80 : 114,475.20 = 36,859.20 : x
  2. Step 2: Convert to fraction form
    76,300.80/114,475.20 = 36,859.20/x
  3. Step 3: Cross multiply
    76,300.80x = 114,475.20 × 36,859.20
  4. Step 4: Simplify right side
    76,300.80x = 4,219,464,291.84
  5. Step 5: Solve for x
    x = 4,219,464,291.84/76,300.80
  6. Step 6: Final answer
    x = 55,300.39

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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.