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Finding the Fourth Proportional to 81,755.50, 112,823.04 and 45,457.44

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Solution

The fourth proportional to 81,755.50, 112,823.04 and 45,457.44 is: 62,731.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,755.50 : 112,823.04 = 45,457.44 : x
  2. Step 2: Convert to fraction form
    81,755.50/112,823.04 = 45,457.44/x
  3. Step 3: Cross multiply
    81,755.50x = 112,823.04 × 45,457.44
  4. Step 4: Simplify right side
    81,755.50x = 5,128,646,571.42
  5. Step 5: Solve for x
    x = 5,128,646,571.42/81,755.50
  6. Step 6: Final answer
    x = 62,731.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.