Home / 77,901.12-107,277.48-67,687.56

Finding the Fourth Proportional to 77,901.12, 107,277.48 and 67,687.56

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Solution

The fourth proportional to 77,901.12, 107,277.48 and 67,687.56 is: 93,212.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,901.12 : 107,277.48 = 67,687.56 : x
  2. Step 2: Convert to fraction form
    77,901.12/107,277.48 = 67,687.56/x
  3. Step 3: Cross multiply
    77,901.12x = 107,277.48 × 67,687.56
  4. Step 4: Simplify right side
    77,901.12x = 7,261,350,864.15
  5. Step 5: Solve for x
    x = 7,261,350,864.15/77,901.12
  6. Step 6: Final answer
    x = 93,212.41

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1.5x scale

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.