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Finding the Fourth Proportional to 79,207.81, 109,302.60 and 45,214.95

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Solution

The fourth proportional to 79,207.81, 109,302.60 and 45,214.95 is: 62,394.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,207.81 : 109,302.60 = 45,214.95 : x
  2. Step 2: Convert to fraction form
    79,207.81/109,302.60 = 45,214.95/x
  3. Step 3: Cross multiply
    79,207.81x = 109,302.60 × 45,214.95
  4. Step 4: Simplify right side
    79,207.81x = 4,942,111,047.36
  5. Step 5: Solve for x
    x = 4,942,111,047.36/79,207.81
  6. Step 6: Final answer
    x = 62,394.24

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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.