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Finding the Fourth Proportional to 117,757.45, 162,503.70 and 64,041.31

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Solution

The fourth proportional to 117,757.45, 162,503.70 and 64,041.31 is: 88,376.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,757.45 : 162,503.70 = 64,041.31 : x
  2. Step 2: Convert to fraction form
    117,757.45/162,503.70 = 64,041.31/x
  3. Step 3: Cross multiply
    117,757.45x = 162,503.70 × 64,041.31
  4. Step 4: Simplify right side
    117,757.45x = 10,406,949,827.85
  5. Step 5: Solve for x
    x = 10,406,949,827.85/117,757.45
  6. Step 6: Final answer
    x = 88,376.15

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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.