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Finding the Fourth Proportional to 30,615.06, 45,917.20 and 8,423.08

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Solution

The fourth proportional to 30,615.06, 45,917.20 and 8,423.08 is: 12,633.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,615.06 : 45,917.20 = 8,423.08 : x
  2. Step 2: Convert to fraction form
    30,615.06/45,917.20 = 8,423.08/x
  3. Step 3: Cross multiply
    30,615.06x = 45,917.20 × 8,423.08
  4. Step 4: Simplify right side
    30,615.06x = 386,764,248.98
  5. Step 5: Solve for x
    x = 386,764,248.98/30,615.06
  6. Step 6: Final answer
    x = 12,633.14

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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.