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Finding the Fourth Proportional to 79,304.40, 109,429.92 and 45,315.05

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Solution

The fourth proportional to 79,304.40, 109,429.92 and 45,315.05 is: 62,528.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,304.40 : 109,429.92 = 45,315.05 : x
  2. Step 2: Convert to fraction form
    79,304.40/109,429.92 = 45,315.05/x
  3. Step 3: Cross multiply
    79,304.40x = 109,429.92 × 45,315.05
  4. Step 4: Simplify right side
    79,304.40x = 4,958,821,749.15
  5. Step 5: Solve for x
    x = 4,958,821,749.15/79,304.40
  6. Step 6: Final answer
    x = 62,528.96

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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.