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Finding the Fourth Proportional to 45,279.57, 67,893.02 and 30,303.79

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Solution

The fourth proportional to 45,279.57, 67,893.02 and 30,303.79 is: 45,438.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,279.57 : 67,893.02 = 30,303.79 : x
  2. Step 2: Convert to fraction form
    45,279.57/67,893.02 = 30,303.79/x
  3. Step 3: Cross multiply
    45,279.57x = 67,893.02 × 30,303.79
  4. Step 4: Simplify right side
    45,279.57x = 2,057,415,612.93
  5. Step 5: Solve for x
    x = 2,057,415,612.93/45,279.57
  6. Step 6: Final answer
    x = 45,438.05

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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.