Home / 81,946.60-122,919.90-29,357.80

Finding the Fourth Proportional to 81,946.60, 122,919.90 and 29,357.80

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Solution

The fourth proportional to 81,946.60, 122,919.90 and 29,357.80 is: 44,036.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,946.60 : 122,919.90 = 29,357.80 : x
  2. Step 2: Convert to fraction form
    81,946.60/122,919.90 = 29,357.80/x
  3. Step 3: Cross multiply
    81,946.60x = 122,919.90 × 29,357.80
  4. Step 4: Simplify right side
    81,946.60x = 3,608,657,840.22
  5. Step 5: Solve for x
    x = 3,608,657,840.22/81,946.60
  6. Step 6: Final answer
    x = 44,036.70

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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.