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Finding the Fourth Proportional to 30,029.81, 45,044.14 and 8,969.91

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Solution

The fourth proportional to 30,029.81, 45,044.14 and 8,969.91 is: 13,454.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,029.81 : 45,044.14 = 8,969.91 : x
  2. Step 2: Convert to fraction form
    30,029.81/45,044.14 = 8,969.91/x
  3. Step 3: Cross multiply
    30,029.81x = 45,044.14 × 8,969.91
  4. Step 4: Simplify right side
    30,029.81x = 404,041,881.83
  5. Step 5: Solve for x
    x = 404,041,881.83/30,029.81
  6. Step 6: Final answer
    x = 13,454.69

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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.