Home / 77,432.31-106,743.47-54,731.25

Finding the Fourth Proportional to 77,432.31, 106,743.47 and 54,731.25

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Solution

The fourth proportional to 77,432.31, 106,743.47 and 54,731.25 is: 75,449.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,432.31 : 106,743.47 = 54,731.25 : x
  2. Step 2: Convert to fraction form
    77,432.31/106,743.47 = 54,731.25/x
  3. Step 3: Cross multiply
    77,432.31x = 106,743.47 × 54,731.25
  4. Step 4: Simplify right side
    77,432.31x = 5,842,203,679.27
  5. Step 5: Solve for x
    x = 5,842,203,679.27/77,432.31
  6. Step 6: Final answer
    x = 75,449.17

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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.