Home / 77,610.20-116,415.30-71,705.30

Finding the Fourth Proportional to 77,610.20, 116,415.30 and 71,705.30

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Solution

The fourth proportional to 77,610.20, 116,415.30 and 71,705.30 is: 107,557.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,610.20 : 116,415.30 = 71,705.30 : x
  2. Step 2: Convert to fraction form
    77,610.20/116,415.30 = 71,705.30/x
  3. Step 3: Cross multiply
    77,610.20x = 116,415.30 × 71,705.30
  4. Step 4: Simplify right side
    77,610.20x = 8,347,594,011.09
  5. Step 5: Solve for x
    x = 8,347,594,011.09/77,610.20
  6. Step 6: Final answer
    x = 107,557.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.