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Finding the Fourth Proportional to 80,268.84, 110,783.70 and 61,117.74

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Solution

The fourth proportional to 80,268.84, 110,783.70 and 61,117.74 is: 84,352.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,268.84 : 110,783.70 = 61,117.74 : x
  2. Step 2: Convert to fraction form
    80,268.84/110,783.70 = 61,117.74/x
  3. Step 3: Cross multiply
    80,268.84x = 110,783.70 × 61,117.74
  4. Step 4: Simplify right side
    80,268.84x = 6,770,849,372.84
  5. Step 5: Solve for x
    x = 6,770,849,372.84/80,268.84
  6. Step 6: Final answer
    x = 84,352.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.