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Finding the Fourth Proportional to 65,672, 98,442.40 and 60,729.44

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Solution

The fourth proportional to 65,672, 98,442.40 and 60,729.44 is: 91,033.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,672 : 98,442.40 = 60,729.44 : x
  2. Step 2: Convert to fraction form
    65,672/98,442.40 = 60,729.44/x
  3. Step 3: Cross multiply
    65,672x = 98,442.40 × 60,729.44
  4. Step 4: Simplify right side
    65,672x = 5,978,351,824.26
  5. Step 5: Solve for x
    x = 5,978,351,824.26/65,672
  6. Step 6: Final answer
    x = 91,033.50

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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.