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Finding the Fourth Proportional to 45,927, 68,881.44 and 12,638.52

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Solution

The fourth proportional to 45,927, 68,881.44 and 12,638.52 is: 18,955.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,927 : 68,881.44 = 12,638.52 : x
  2. Step 2: Convert to fraction form
    45,927/68,881.44 = 12,638.52/x
  3. Step 3: Cross multiply
    45,927x = 68,881.44 × 12,638.52
  4. Step 4: Simplify right side
    45,927x = 870,559,457.07
  5. Step 5: Solve for x
    x = 870,559,457.07/45,927
  6. Step 6: Final answer
    x = 18,955.29

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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.