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Finding the Fourth Proportional to 65,253.29, 97,878.56 and 20,880.05

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Solution

The fourth proportional to 65,253.29, 97,878.56 and 20,880.05 is: 31,319.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,253.29 : 97,878.56 = 20,880.05 : x
  2. Step 2: Convert to fraction form
    65,253.29/97,878.56 = 20,880.05/x
  3. Step 3: Cross multiply
    65,253.29x = 97,878.56 × 20,880.05
  4. Step 4: Simplify right side
    65,253.29x = 2,043,708,632.93
  5. Step 5: Solve for x
    x = 2,043,708,632.93/65,253.29
  6. Step 6: Final answer
    x = 31,319.63

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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.