Home / 81,972.57-122,909.58-55,597.35

Finding the Fourth Proportional to 81,972.57, 122,909.58 and 55,597.35

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Solution

The fourth proportional to 81,972.57, 122,909.58 and 55,597.35 is: 83,362.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,972.57 : 122,909.58 = 55,597.35 : x
  2. Step 2: Convert to fraction form
    81,972.57/122,909.58 = 55,597.35/x
  3. Step 3: Cross multiply
    81,972.57x = 122,909.58 × 55,597.35
  4. Step 4: Simplify right side
    81,972.57x = 6,833,446,937.61
  5. Step 5: Solve for x
    x = 6,833,446,937.61/81,972.57
  6. Step 6: Final answer
    x = 83,362.60

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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.