Home / 82,475.62-113,867.89-56,678.60

Finding the Fourth Proportional to 82,475.62, 113,867.89 and 56,678.60

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Solution

The fourth proportional to 82,475.62, 113,867.89 and 56,678.60 is: 78,251.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,475.62 : 113,867.89 = 56,678.60 : x
  2. Step 2: Convert to fraction form
    82,475.62/113,867.89 = 56,678.60/x
  3. Step 3: Cross multiply
    82,475.62x = 113,867.89 × 56,678.60
  4. Step 4: Simplify right side
    82,475.62x = 6,453,872,733.13
  5. Step 5: Solve for x
    x = 6,453,872,733.13/82,475.62
  6. Step 6: Final answer
    x = 78,251.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.