Home / 77,774.31-107,336.61-47,579.74

Finding the Fourth Proportional to 77,774.31, 107,336.61 and 47,579.74

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Solution

The fourth proportional to 77,774.31, 107,336.61 and 47,579.74 is: 65,664.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,774.31 : 107,336.61 = 47,579.74 : x
  2. Step 2: Convert to fraction form
    77,774.31/107,336.61 = 47,579.74/x
  3. Step 3: Cross multiply
    77,774.31x = 107,336.61 × 47,579.74
  4. Step 4: Simplify right side
    77,774.31x = 5,107,047,727.94
  5. Step 5: Solve for x
    x = 5,107,047,727.94/77,774.31
  6. Step 6: Final answer
    x = 65,664.97

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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.