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Finding the Fourth Proportional to 76,009.66, 113,950.80 and 36,005.78

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Solution

The fourth proportional to 76,009.66, 113,950.80 and 36,005.78 is: 53,978.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,009.66 : 113,950.80 = 36,005.78 : x
  2. Step 2: Convert to fraction form
    76,009.66/113,950.80 = 36,005.78/x
  3. Step 3: Cross multiply
    76,009.66x = 113,950.80 × 36,005.78
  4. Step 4: Simplify right side
    76,009.66x = 4,102,887,720.50
  5. Step 5: Solve for x
    x = 4,102,887,720.50/76,009.66
  6. Step 6: Final answer
    x = 53,978.51

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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.