Home / 77,679.48-107,215.38-54,994.89

Finding the Fourth Proportional to 77,679.48, 107,215.38 and 54,994.89

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Solution

The fourth proportional to 77,679.48, 107,215.38 and 54,994.89 is: 75,905.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,679.48 : 107,215.38 = 54,994.89 : x
  2. Step 2: Convert to fraction form
    77,679.48/107,215.38 = 54,994.89/x
  3. Step 3: Cross multiply
    77,679.48x = 107,215.38 × 54,994.89
  4. Step 4: Simplify right side
    77,679.48x = 5,896,298,029.41
  5. Step 5: Solve for x
    x = 5,896,298,029.41/77,679.48
  6. Step 6: Final answer
    x = 75,905.48

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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.