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Finding the Fourth Proportional to 45,323.80, 67,990.30 and 21,627.30

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Solution

The fourth proportional to 45,323.80, 67,990.30 and 21,627.30 is: 32,443.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,323.80 : 67,990.30 = 21,627.30 : x
  2. Step 2: Convert to fraction form
    45,323.80/67,990.30 = 21,627.30/x
  3. Step 3: Cross multiply
    45,323.80x = 67,990.30 × 21,627.30
  4. Step 4: Simplify right side
    45,323.80x = 1,470,446,615.19
  5. Step 5: Solve for x
    x = 1,470,446,615.19/45,323.80
  6. Step 6: Final answer
    x = 32,443.14

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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.