Home / 81,023.40-121,529.34-21,862.44

Finding the Fourth Proportional to 81,023.40, 121,529.34 and 21,862.44

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Solution

The fourth proportional to 81,023.40, 121,529.34 and 21,862.44 is: 32,792.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,023.40 : 121,529.34 = 21,862.44 : x
  2. Step 2: Convert to fraction form
    81,023.40/121,529.34 = 21,862.44/x
  3. Step 3: Cross multiply
    81,023.40x = 121,529.34 × 21,862.44
  4. Step 4: Simplify right side
    81,023.40x = 2,656,927,903.99
  5. Step 5: Solve for x
    x = 2,656,927,903.99/81,023.40
  6. Step 6: Final answer
    x = 32,792.11

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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.