Home / 64,682.30-89,213.46-57,115.28

Finding the Fourth Proportional to 64,682.30, 89,213.46 and 57,115.28

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Solution

The fourth proportional to 64,682.30, 89,213.46 and 57,115.28 is: 78,776.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,682.30 : 89,213.46 = 57,115.28 : x
  2. Step 2: Convert to fraction form
    64,682.30/89,213.46 = 57,115.28/x
  3. Step 3: Cross multiply
    64,682.30x = 89,213.46 × 57,115.28
  4. Step 4: Simplify right side
    64,682.30x = 5,095,451,747.67
  5. Step 5: Solve for x
    x = 5,095,451,747.67/64,682.30
  6. Step 6: Final answer
    x = 78,776.60

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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.