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Finding the Fourth Proportional to 117,402.40, 162,015.44 and 63,687.52

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Solution

The fourth proportional to 117,402.40, 162,015.44 and 63,687.52 is: 87,888.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,402.40 : 162,015.44 = 63,687.52 : x
  2. Step 2: Convert to fraction form
    117,402.40/162,015.44 = 63,687.52/x
  3. Step 3: Cross multiply
    117,402.40x = 162,015.44 × 63,687.52
  4. Step 4: Simplify right side
    117,402.40x = 10,318,361,575.31
  5. Step 5: Solve for x
    x = 10,318,361,575.31/117,402.40
  6. Step 6: Final answer
    x = 87,888.85

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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.