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Finding the Fourth Proportional to 70,954.84, 106,432.68 and 21,035.37

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Solution

The fourth proportional to 70,954.84, 106,432.68 and 21,035.37 is: 31,553.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,954.84 : 106,432.68 = 21,035.37 : x
  2. Step 2: Convert to fraction form
    70,954.84/106,432.68 = 21,035.37/x
  3. Step 3: Cross multiply
    70,954.84x = 106,432.68 × 21,035.37
  4. Step 4: Simplify right side
    70,954.84x = 2,238,850,803.89
  5. Step 5: Solve for x
    x = 2,238,850,803.89/70,954.84
  6. Step 6: Final answer
    x = 31,553.18

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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.