Home / 81,039.60-121,569.10-24,872.36

Finding the Fourth Proportional to 81,039.60, 121,569.10 and 24,872.36

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Solution

The fourth proportional to 81,039.60, 121,569.10 and 24,872.36 is: 37,311.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,039.60 : 121,569.10 = 24,872.36 : x
  2. Step 2: Convert to fraction form
    81,039.60/121,569.10 = 24,872.36/x
  3. Step 3: Cross multiply
    81,039.60x = 121,569.10 × 24,872.36
  4. Step 4: Simplify right side
    81,039.60x = 3,023,710,420.08
  5. Step 5: Solve for x
    x = 3,023,710,420.08/81,039.60
  6. Step 6: Final answer
    x = 37,311.52

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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.