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Finding the Fourth Proportional to 80,044.80, 120,048.88 and 30,130.12

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Solution

The fourth proportional to 80,044.80, 120,048.88 and 30,130.12 is: 45,188.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,044.80 : 120,048.88 = 30,130.12 : x
  2. Step 2: Convert to fraction form
    80,044.80/120,048.88 = 30,130.12/x
  3. Step 3: Cross multiply
    80,044.80x = 120,048.88 × 30,130.12
  4. Step 4: Simplify right side
    80,044.80x = 3,617,087,160.27
  5. Step 5: Solve for x
    x = 3,617,087,160.27/80,044.80
  6. Step 6: Final answer
    x = 45,188.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.