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Finding the Fourth Proportional to 62,728.56, 94,089.14 and 45,878.64

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Solution

The fourth proportional to 62,728.56, 94,089.14 and 45,878.64 is: 68,815.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,728.56 : 94,089.14 = 45,878.64 : x
  2. Step 2: Convert to fraction form
    62,728.56/94,089.14 = 45,878.64/x
  3. Step 3: Cross multiply
    62,728.56x = 94,089.14 × 45,878.64
  4. Step 4: Simplify right side
    62,728.56x = 4,316,681,781.97
  5. Step 5: Solve for x
    x = 4,316,681,781.97/62,728.56
  6. Step 6: Final answer
    x = 68,815.25

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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.