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Finding the Fourth Proportional to 60,351.68, 90,409.80 and 39,512

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Solution

The fourth proportional to 60,351.68, 90,409.80 and 39,512 is: 59,190.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,351.68 : 90,409.80 = 39,512 : x
  2. Step 2: Convert to fraction form
    60,351.68/90,409.80 = 39,512/x
  3. Step 3: Cross multiply
    60,351.68x = 90,409.80 × 39,512
  4. Step 4: Simplify right side
    60,351.68x = 3,572,272,017.60
  5. Step 5: Solve for x
    x = 3,572,272,017.60/60,351.68
  6. Step 6: Final answer
    x = 59,190.93

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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.