Home / 77,789.77-107,123.99-67,576.14

Finding the Fourth Proportional to 77,789.77, 107,123.99 and 67,576.14

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Solution

The fourth proportional to 77,789.77, 107,123.99 and 67,576.14 is: 93,058.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,789.77 : 107,123.99 = 67,576.14 : x
  2. Step 2: Convert to fraction form
    77,789.77/107,123.99 = 67,576.14/x
  3. Step 3: Cross multiply
    77,789.77x = 107,123.99 × 67,576.14
  4. Step 4: Simplify right side
    77,789.77x = 7,239,025,407.72
  5. Step 5: Solve for x
    x = 7,239,025,407.72/77,789.77
  6. Step 6: Final answer
    x = 93,058.84

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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.