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Finding the Fourth Proportional to 30,680.70, 45,999.45 and 14,048.70

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Solution

The fourth proportional to 30,680.70, 45,999.45 and 14,048.70 is: 21,063.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,680.70 : 45,999.45 = 14,048.70 : x
  2. Step 2: Convert to fraction form
    30,680.70/45,999.45 = 14,048.70/x
  3. Step 3: Cross multiply
    30,680.70x = 45,999.45 × 14,048.70
  4. Step 4: Simplify right side
    30,680.70x = 646,232,473.22
  5. Step 5: Solve for x
    x = 646,232,473.22/30,680.70
  6. Step 6: Final answer
    x = 21,063.16

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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.