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Finding the Fourth Proportional to 71,396.88, 98,955.06 and 70,069.20

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Solution

The fourth proportional to 71,396.88, 98,955.06 and 70,069.20 is: 97,114.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,396.88 : 98,955.06 = 70,069.20 : x
  2. Step 2: Convert to fraction form
    71,396.88/98,955.06 = 70,069.20/x
  3. Step 3: Cross multiply
    71,396.88x = 98,955.06 × 70,069.20
  4. Step 4: Simplify right side
    71,396.88x = 6,933,701,890.15
  5. Step 5: Solve for x
    x = 6,933,701,890.15/71,396.88
  6. Step 6: Final answer
    x = 97,114.91

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.