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Finding the Fourth Proportional to 90,471.40, 124,893.30 and 60,307

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Solution

The fourth proportional to 90,471.40, 124,893.30 and 60,307 is: 83,252.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,471.40 : 124,893.30 = 60,307 : x
  2. Step 2: Convert to fraction form
    90,471.40/124,893.30 = 60,307/x
  3. Step 3: Cross multiply
    90,471.40x = 124,893.30 × 60,307
  4. Step 4: Simplify right side
    90,471.40x = 7,531,940,243.10
  5. Step 5: Solve for x
    x = 7,531,940,243.10/90,471.40
  6. Step 6: Final answer
    x = 83,252.17

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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.