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Finding the Fourth Proportional to 65,915.03, 90,946.95 and 39,052.89

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Solution

The fourth proportional to 65,915.03, 90,946.95 and 39,052.89 is: 53,883.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,915.03 : 90,946.95 = 39,052.89 : x
  2. Step 2: Convert to fraction form
    65,915.03/90,946.95 = 39,052.89/x
  3. Step 3: Cross multiply
    65,915.03x = 90,946.95 × 39,052.89
  4. Step 4: Simplify right side
    65,915.03x = 3,551,741,234.19
  5. Step 5: Solve for x
    x = 3,551,741,234.19/65,915.03
  6. Step 6: Final answer
    x = 53,883.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.