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Finding the Fourth Proportional to 70,252.94, 105,420.90 and 25,910.66

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Solution

The fourth proportional to 70,252.94, 105,420.90 and 25,910.66 is: 38,881.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,252.94 : 105,420.90 = 25,910.66 : x
  2. Step 2: Convert to fraction form
    70,252.94/105,420.90 = 25,910.66/x
  3. Step 3: Cross multiply
    70,252.94x = 105,420.90 × 25,910.66
  4. Step 4: Simplify right side
    70,252.94x = 2,731,525,096.79
  5. Step 5: Solve for x
    x = 2,731,525,096.79/70,252.94
  6. Step 6: Final answer
    x = 38,881.29

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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.