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Finding the Fourth Proportional to 70,129.24, 105,115.92 and 53,434.24

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Solution

The fourth proportional to 70,129.24, 105,115.92 and 53,434.24 is: 80,091.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,129.24 : 105,115.92 = 53,434.24 : x
  2. Step 2: Convert to fraction form
    70,129.24/105,115.92 = 53,434.24/x
  3. Step 3: Cross multiply
    70,129.24x = 105,115.92 × 53,434.24
  4. Step 4: Simplify right side
    70,129.24x = 5,616,789,297.10
  5. Step 5: Solve for x
    x = 5,616,789,297.10/70,129.24
  6. Step 6: Final answer
    x = 80,091.97

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1.5x scale

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.