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Finding the Fourth Proportional to 45,457.80, 68,122.70 and 36,113.80

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Solution

The fourth proportional to 45,457.80, 68,122.70 and 36,113.80 is: 54,119.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,457.80 : 68,122.70 = 36,113.80 : x
  2. Step 2: Convert to fraction form
    45,457.80/68,122.70 = 36,113.80/x
  3. Step 3: Cross multiply
    45,457.80x = 68,122.70 × 36,113.80
  4. Step 4: Simplify right side
    45,457.80x = 2,460,169,563.26
  5. Step 5: Solve for x
    x = 2,460,169,563.26/45,457.80
  6. Step 6: Final answer
    x = 54,119.86

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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.