Home / 76,845.64-115,115.10-37,282.72

Finding the Fourth Proportional to 76,845.64, 115,115.10 and 37,282.72

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Solution

The fourth proportional to 76,845.64, 115,115.10 and 37,282.72 is: 55,849.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,845.64 : 115,115.10 = 37,282.72 : x
  2. Step 2: Convert to fraction form
    76,845.64/115,115.10 = 37,282.72/x
  3. Step 3: Cross multiply
    76,845.64x = 115,115.10 × 37,282.72
  4. Step 4: Simplify right side
    76,845.64x = 4,291,804,041.07
  5. Step 5: Solve for x
    x = 4,291,804,041.07/76,845.64
  6. Step 6: Final answer
    x = 55,849.68

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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.