Home / 76,140.95-105,067.26-45,507.96

Finding the Fourth Proportional to 76,140.95, 105,067.26 and 45,507.96

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Solution

The fourth proportional to 76,140.95, 105,067.26 and 45,507.96 is: 62,796.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,140.95 : 105,067.26 = 45,507.96 : x
  2. Step 2: Convert to fraction form
    76,140.95/105,067.26 = 45,507.96/x
  3. Step 3: Cross multiply
    76,140.95x = 105,067.26 × 45,507.96
  4. Step 4: Simplify right side
    76,140.95x = 4,781,396,665.39
  5. Step 5: Solve for x
    x = 4,781,396,665.39/76,140.95
  6. Step 6: Final answer
    x = 62,796.66

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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.