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Finding the Fourth Proportional to 79,409.34, 109,553.62 and 45,399.55

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Solution

The fourth proportional to 79,409.34, 109,553.62 and 45,399.55 is: 62,633.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,409.34 : 109,553.62 = 45,399.55 : x
  2. Step 2: Convert to fraction form
    79,409.34/109,553.62 = 45,399.55/x
  3. Step 3: Cross multiply
    79,409.34x = 109,553.62 × 45,399.55
  4. Step 4: Simplify right side
    79,409.34x = 4,973,685,048.87
  5. Step 5: Solve for x
    x = 4,973,685,048.87/79,409.34
  6. Step 6: Final answer
    x = 62,633.50

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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.