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Finding the Fourth Proportional to 79,588.78, 109,831.61 and 43,779.29

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Solution

The fourth proportional to 79,588.78, 109,831.61 and 43,779.29 is: 60,414.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,588.78 : 109,831.61 = 43,779.29 : x
  2. Step 2: Convert to fraction form
    79,588.78/109,831.61 = 43,779.29/x
  3. Step 3: Cross multiply
    79,588.78x = 109,831.61 × 43,779.29
  4. Step 4: Simplify right side
    79,588.78x = 4,808,349,465.65
  5. Step 5: Solve for x
    x = 4,808,349,465.65/79,588.78
  6. Step 6: Final answer
    x = 60,414.92

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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.