Home / 81,890.40-122,835.60-26,486.40

Finding the Fourth Proportional to 81,890.40, 122,835.60 and 26,486.40

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Solution

The fourth proportional to 81,890.40, 122,835.60 and 26,486.40 is: 39,729.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,890.40 : 122,835.60 = 26,486.40 : x
  2. Step 2: Convert to fraction form
    81,890.40/122,835.60 = 26,486.40/x
  3. Step 3: Cross multiply
    81,890.40x = 122,835.60 × 26,486.40
  4. Step 4: Simplify right side
    81,890.40x = 3,253,472,835.84
  5. Step 5: Solve for x
    x = 3,253,472,835.84/81,890.40
  6. Step 6: Final answer
    x = 39,729.60

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1.5x scale

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.