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Finding the Fourth Proportional to 45,130.22, 67,734.22 and 21,776.30

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Solution

The fourth proportional to 45,130.22, 67,734.22 and 21,776.30 is: 32,683.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,130.22 : 67,734.22 = 21,776.30 : x
  2. Step 2: Convert to fraction form
    45,130.22/67,734.22 = 21,776.30/x
  3. Step 3: Cross multiply
    45,130.22x = 67,734.22 × 21,776.30
  4. Step 4: Simplify right side
    45,130.22x = 1,475,000,694.99
  5. Step 5: Solve for x
    x = 1,475,000,694.99/45,130.22
  6. Step 6: Final answer
    x = 32,683.22

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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.