Home / 80,359.17-120,539.75-55,392.50

Finding the Fourth Proportional to 80,359.17, 120,539.75 and 55,392.50

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Solution

The fourth proportional to 80,359.17, 120,539.75 and 55,392.50 is: 83,089.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,359.17 : 120,539.75 = 55,392.50 : x
  2. Step 2: Convert to fraction form
    80,359.17/120,539.75 = 55,392.50/x
  3. Step 3: Cross multiply
    80,359.17x = 120,539.75 × 55,392.50
  4. Step 4: Simplify right side
    80,359.17x = 6,676,998,126.26
  5. Step 5: Solve for x
    x = 6,676,998,126.26/80,359.17
  6. Step 6: Final answer
    x = 83,089.44

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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.