Home / 79,620.09-109,875.60-47,789.13

Finding the Fourth Proportional to 79,620.09, 109,875.60 and 47,789.13

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Solution

The fourth proportional to 79,620.09, 109,875.60 and 47,789.13 is: 65,948.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,620.09 : 109,875.60 = 47,789.13 : x
  2. Step 2: Convert to fraction form
    79,620.09/109,875.60 = 47,789.13/x
  3. Step 3: Cross multiply
    79,620.09x = 109,875.60 × 47,789.13
  4. Step 4: Simplify right side
    79,620.09x = 5,250,859,332.23
  5. Step 5: Solve for x
    x = 5,250,859,332.23/79,620.09
  6. Step 6: Final answer
    x = 65,948.92

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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.