Home / 81,711.10-122,566.65-29,101.60

Finding the Fourth Proportional to 81,711.10, 122,566.65 and 29,101.60

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Solution

The fourth proportional to 81,711.10, 122,566.65 and 29,101.60 is: 43,652.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,711.10 : 122,566.65 = 29,101.60 : x
  2. Step 2: Convert to fraction form
    81,711.10/122,566.65 = 29,101.60/x
  3. Step 3: Cross multiply
    81,711.10x = 122,566.65 × 29,101.60
  4. Step 4: Simplify right side
    81,711.10x = 3,566,885,621.64
  5. Step 5: Solve for x
    x = 3,566,885,621.64/81,711.10
  6. Step 6: Final answer
    x = 43,652.40

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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.