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Finding the Fourth Proportional to 79,259.99, 109,383.18 and 45,279.51

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Solution

The fourth proportional to 79,259.99, 109,383.18 and 45,279.51 is: 62,488.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,259.99 : 109,383.18 = 45,279.51 : x
  2. Step 2: Convert to fraction form
    79,259.99/109,383.18 = 45,279.51/x
  3. Step 3: Cross multiply
    79,259.99x = 109,383.18 × 45,279.51
  4. Step 4: Simplify right side
    79,259.99x = 4,952,816,403.68
  5. Step 5: Solve for x
    x = 4,952,816,403.68/79,259.99
  6. Step 6: Final answer
    x = 62,488.23

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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.