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Finding the Fourth Proportional to 45,622.80, 68,404.60 and 19,320.40

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Solution

The fourth proportional to 45,622.80, 68,404.60 and 19,320.40 is: 28,968.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,622.80 : 68,404.60 = 19,320.40 : x
  2. Step 2: Convert to fraction form
    45,622.80/68,404.60 = 19,320.40/x
  3. Step 3: Cross multiply
    45,622.80x = 68,404.60 × 19,320.40
  4. Step 4: Simplify right side
    45,622.80x = 1,321,604,233.84
  5. Step 5: Solve for x
    x = 1,321,604,233.84/45,622.80
  6. Step 6: Final answer
    x = 28,968.06

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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.