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Finding the Fourth Proportional to 30,048.60, 45,080.70 and 8,989.08

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Solution

The fourth proportional to 30,048.60, 45,080.70 and 8,989.08 is: 13,485.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,048.60 : 45,080.70 = 8,989.08 : x
  2. Step 2: Convert to fraction form
    30,048.60/45,080.70 = 8,989.08/x
  3. Step 3: Cross multiply
    30,048.60x = 45,080.70 × 8,989.08
  4. Step 4: Simplify right side
    30,048.60x = 405,234,018.76
  5. Step 5: Solve for x
    x = 405,234,018.76/30,048.60
  6. Step 6: Final answer
    x = 13,485.95

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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.