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Finding the Fourth Proportional to 81,367.96, 121,893.03 and 56,063

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Solution

The fourth proportional to 81,367.96, 121,893.03 and 56,063 is: 83,985.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,367.96 : 121,893.03 = 56,063 : x
  2. Step 2: Convert to fraction form
    81,367.96/121,893.03 = 56,063/x
  3. Step 3: Cross multiply
    81,367.96x = 121,893.03 × 56,063
  4. Step 4: Simplify right side
    81,367.96x = 6,833,688,940.89
  5. Step 5: Solve for x
    x = 6,833,688,940.89/81,367.96
  6. Step 6: Final answer
    x = 83,985.01

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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.