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Finding the Fourth Proportional to 66,440.66, 99,657.54 and 36,512.37

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Solution

The fourth proportional to 66,440.66, 99,657.54 and 36,512.37 is: 54,766.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,440.66 : 99,657.54 = 36,512.37 : x
  2. Step 2: Convert to fraction form
    66,440.66/99,657.54 = 36,512.37/x
  3. Step 3: Cross multiply
    66,440.66x = 99,657.54 × 36,512.37
  4. Step 4: Simplify right side
    66,440.66x = 3,638,732,973.77
  5. Step 5: Solve for x
    x = 3,638,732,973.77/66,440.66
  6. Step 6: Final answer
    x = 54,766.66

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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.