Home / 77,986.56-107,632.08-47,773.56

Finding the Fourth Proportional to 77,986.56, 107,632.08 and 47,773.56

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Solution

The fourth proportional to 77,986.56, 107,632.08 and 47,773.56 is: 65,934.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,986.56 : 107,632.08 = 47,773.56 : x
  2. Step 2: Convert to fraction form
    77,986.56/107,632.08 = 47,773.56/x
  3. Step 3: Cross multiply
    77,986.56x = 107,632.08 × 47,773.56
  4. Step 4: Simplify right side
    77,986.56x = 5,141,967,631.80
  5. Step 5: Solve for x
    x = 5,141,967,631.80/77,986.56
  6. Step 6: Final answer
    x = 65,934.02

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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.