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Finding the Fourth Proportional to 30,287.63, 45,204.63 and 28,294.72

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Solution

The fourth proportional to 30,287.63, 45,204.63 and 28,294.72 is: 42,230.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,287.63 : 45,204.63 = 28,294.72 : x
  2. Step 2: Convert to fraction form
    30,287.63/45,204.63 = 28,294.72/x
  3. Step 3: Cross multiply
    30,287.63x = 45,204.63 × 28,294.72
  4. Step 4: Simplify right side
    30,287.63x = 1,279,052,622.45
  5. Step 5: Solve for x
    x = 1,279,052,622.45/30,287.63
  6. Step 6: Final answer
    x = 42,230.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.