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Finding the Fourth Proportional to 76,291.20, 114,404.40 and 36,860.40

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Solution

The fourth proportional to 76,291.20, 114,404.40 and 36,860.40 is: 55,274.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,291.20 : 114,404.40 = 36,860.40 : x
  2. Step 2: Convert to fraction form
    76,291.20/114,404.40 = 36,860.40/x
  3. Step 3: Cross multiply
    76,291.20x = 114,404.40 × 36,860.40
  4. Step 4: Simplify right side
    76,291.20x = 4,216,991,945.76
  5. Step 5: Solve for x
    x = 4,216,991,945.76/76,291.20
  6. Step 6: Final answer
    x = 55,274.95

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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.