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Finding the Fourth Proportional to 81,597.64, 112,604.44 and 45,787.57

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Solution

The fourth proportional to 81,597.64, 112,604.44 and 45,787.57 is: 63,186.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,597.64 : 112,604.44 = 45,787.57 : x
  2. Step 2: Convert to fraction form
    81,597.64/112,604.44 = 45,787.57/x
  3. Step 3: Cross multiply
    81,597.64x = 112,604.44 × 45,787.57
  4. Step 4: Simplify right side
    81,597.64x = 5,155,883,678.81
  5. Step 5: Solve for x
    x = 5,155,883,678.81/81,597.64
  6. Step 6: Final answer
    x = 63,186.68

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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.