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Finding the Fourth Proportional to 45,408.72, 68,113.14 and 21,710.70

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Solution

The fourth proportional to 45,408.72, 68,113.14 and 21,710.70 is: 32,566.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,408.72 : 68,113.14 = 21,710.70 : x
  2. Step 2: Convert to fraction form
    45,408.72/68,113.14 = 21,710.70/x
  3. Step 3: Cross multiply
    45,408.72x = 68,113.14 × 21,710.70
  4. Step 4: Simplify right side
    45,408.72x = 1,478,783,948.60
  5. Step 5: Solve for x
    x = 1,478,783,948.60/45,408.72
  6. Step 6: Final answer
    x = 32,566.08

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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.