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Finding the Fourth Proportional to 65,880.64, 98,841.96 and 40,838.56

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Solution

The fourth proportional to 65,880.64, 98,841.96 and 40,838.56 is: 61,270.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,880.64 : 98,841.96 = 40,838.56 : x
  2. Step 2: Convert to fraction form
    65,880.64/98,841.96 = 40,838.56/x
  3. Step 3: Cross multiply
    65,880.64x = 98,841.96 × 40,838.56
  4. Step 4: Simplify right side
    65,880.64x = 4,036,563,313.98
  5. Step 5: Solve for x
    x = 4,036,563,313.98/65,880.64
  6. Step 6: Final answer
    x = 61,270.86

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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.