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Finding the Fourth Proportional to 30,047.68, 45,080.57 and 8,988.42

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Solution

The fourth proportional to 30,047.68, 45,080.57 and 8,988.42 is: 13,485.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,047.68 : 45,080.57 = 8,988.42 : x
  2. Step 2: Convert to fraction form
    30,047.68/45,080.57 = 8,988.42/x
  3. Step 3: Cross multiply
    30,047.68x = 45,080.57 × 8,988.42
  4. Step 4: Simplify right side
    30,047.68x = 405,203,097.00
  5. Step 5: Solve for x
    x = 405,203,097.00/30,047.68
  6. Step 6: Final answer
    x = 13,485.34

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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.