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Finding the Fourth Proportional to 70,145.40, 96,796.98 and 39,930.62

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Solution

The fourth proportional to 70,145.40, 96,796.98 and 39,930.62 is: 55,102.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,145.40 : 96,796.98 = 39,930.62 : x
  2. Step 2: Convert to fraction form
    70,145.40/96,796.98 = 39,930.62/x
  3. Step 3: Cross multiply
    70,145.40x = 96,796.98 × 39,930.62
  4. Step 4: Simplify right side
    70,145.40x = 3,865,163,425.53
  5. Step 5: Solve for x
    x = 3,865,163,425.53/70,145.40
  6. Step 6: Final answer
    x = 55,102.17

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1.5x scale

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.