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Finding the Fourth Proportional to 65,980.42, 98,955.45 and 39,333.94

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Solution

The fourth proportional to 65,980.42, 98,955.45 and 39,333.94 is: 58,991.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,980.42 : 98,955.45 = 39,333.94 : x
  2. Step 2: Convert to fraction form
    65,980.42/98,955.45 = 39,333.94/x
  3. Step 3: Cross multiply
    65,980.42x = 98,955.45 × 39,333.94
  4. Step 4: Simplify right side
    65,980.42x = 3,892,307,485.58
  5. Step 5: Solve for x
    x = 3,892,307,485.58/65,980.42
  6. Step 6: Final answer
    x = 58,991.86

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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.