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Finding the Fourth Proportional to 45,420.40, 68,057.70 and 29,819.80

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Solution

The fourth proportional to 45,420.40, 68,057.70 and 29,819.80 is: 44,681.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,420.40 : 68,057.70 = 29,819.80 : x
  2. Step 2: Convert to fraction form
    45,420.40/68,057.70 = 29,819.80/x
  3. Step 3: Cross multiply
    45,420.40x = 68,057.70 × 29,819.80
  4. Step 4: Simplify right side
    45,420.40x = 2,029,467,002.46
  5. Step 5: Solve for x
    x = 2,029,467,002.46/45,420.40
  6. Step 6: Final answer
    x = 44,681.84

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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.