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Finding the Fourth Proportional to 90,264.84, 124,511.22 and 66,453

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Solution

The fourth proportional to 90,264.84, 124,511.22 and 66,453 is: 91,665.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,264.84 : 124,511.22 = 66,453 : x
  2. Step 2: Convert to fraction form
    90,264.84/124,511.22 = 66,453/x
  3. Step 3: Cross multiply
    90,264.84x = 124,511.22 × 66,453
  4. Step 4: Simplify right side
    90,264.84x = 8,274,144,102.66
  5. Step 5: Solve for x
    x = 8,274,144,102.66/90,264.84
  6. Step 6: Final answer
    x = 91,665.19

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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.