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Finding the Fourth Proportional to 81,875.83, 122,813.74 and 22,711.50

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Solution

The fourth proportional to 81,875.83, 122,813.74 and 22,711.50 is: 34,067.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,875.83 : 122,813.74 = 22,711.50 : x
  2. Step 2: Convert to fraction form
    81,875.83/122,813.74 = 22,711.50/x
  3. Step 3: Cross multiply
    81,875.83x = 122,813.74 × 22,711.50
  4. Step 4: Simplify right side
    81,875.83x = 2,789,284,256.01
  5. Step 5: Solve for x
    x = 2,789,284,256.01/81,875.83
  6. Step 6: Final answer
    x = 34,067.25

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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.