Home / 78,438.62-117,591.84-34,031.96

Finding the Fourth Proportional to 78,438.62, 117,591.84 and 34,031.96

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Solution

The fourth proportional to 78,438.62, 117,591.84 and 34,031.96 is: 51,019.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,438.62 : 117,591.84 = 34,031.96 : x
  2. Step 2: Convert to fraction form
    78,438.62/117,591.84 = 34,031.96/x
  3. Step 3: Cross multiply
    78,438.62x = 117,591.84 × 34,031.96
  4. Step 4: Simplify right side
    78,438.62x = 4,001,880,795.21
  5. Step 5: Solve for x
    x = 4,001,880,795.21/78,438.62
  6. Step 6: Final answer
    x = 51,019.27

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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.