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Finding the Fourth Proportional to 70,505.40, 105,661.98 and 35,469.12

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Solution

The fourth proportional to 70,505.40, 105,661.98 and 35,469.12 is: 53,155.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,505.40 : 105,661.98 = 35,469.12 : x
  2. Step 2: Convert to fraction form
    70,505.40/105,661.98 = 35,469.12/x
  3. Step 3: Cross multiply
    70,505.40x = 105,661.98 × 35,469.12
  4. Step 4: Simplify right side
    70,505.40x = 3,747,737,448.06
  5. Step 5: Solve for x
    x = 3,747,737,448.06/70,505.40
  6. Step 6: Final answer
    x = 53,155.32

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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.