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Finding the Fourth Proportional to 83,898.48, 126,421.38 and 69,426.48

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Solution

The fourth proportional to 83,898.48, 126,421.38 and 69,426.48 is: 104,614.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,898.48 : 126,421.38 = 69,426.48 : x
  2. Step 2: Convert to fraction form
    83,898.48/126,421.38 = 69,426.48/x
  3. Step 3: Cross multiply
    83,898.48x = 126,421.38 × 69,426.48
  4. Step 4: Simplify right side
    83,898.48x = 8,776,991,410.14
  5. Step 5: Solve for x
    x = 8,776,991,410.14/83,898.48
  6. Step 6: Final answer
    x = 104,614.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.