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Finding the Fourth Proportional to 63,646, 95,445 and 51,135.28

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Solution

The fourth proportional to 63,646, 95,445 and 51,135.28 is: 76,683.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,646 : 95,445 = 51,135.28 : x
  2. Step 2: Convert to fraction form
    63,646/95,445 = 51,135.28/x
  3. Step 3: Cross multiply
    63,646x = 95,445 × 51,135.28
  4. Step 4: Simplify right side
    63,646x = 4,880,606,799.60
  5. Step 5: Solve for x
    x = 4,880,606,799.60/63,646
  6. Step 6: Final answer
    x = 76,683.64

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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.