Home / 78,046.08-107,699.85-45,776.28

Finding the Fourth Proportional to 78,046.08, 107,699.85 and 45,776.28

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Solution

The fourth proportional to 78,046.08, 107,699.85 and 45,776.28 is: 63,169.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,046.08 : 107,699.85 = 45,776.28 : x
  2. Step 2: Convert to fraction form
    78,046.08/107,699.85 = 45,776.28/x
  3. Step 3: Cross multiply
    78,046.08x = 107,699.85 × 45,776.28
  4. Step 4: Simplify right side
    78,046.08x = 4,930,098,489.56
  5. Step 5: Solve for x
    x = 4,930,098,489.56/78,046.08
  6. Step 6: Final answer
    x = 63,169.07

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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.