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Finding the Fourth Proportional to 35,086.70, 52,650.80 and 12,915.65

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Solution

The fourth proportional to 35,086.70, 52,650.80 and 12,915.65 is: 19,381.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,086.70 : 52,650.80 = 12,915.65 : x
  2. Step 2: Convert to fraction form
    35,086.70/52,650.80 = 12,915.65/x
  3. Step 3: Cross multiply
    35,086.70x = 52,650.80 × 12,915.65
  4. Step 4: Simplify right side
    35,086.70x = 680,019,305.02
  5. Step 5: Solve for x
    x = 680,019,305.02/35,086.70
  6. Step 6: Final answer
    x = 19,381.11

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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.