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Finding the Fourth Proportional to 62,878.60, 94,315.20 and 21,325.60

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Solution

The fourth proportional to 62,878.60, 94,315.20 and 21,325.60 is: 31,987.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,878.60 : 94,315.20 = 21,325.60 : x
  2. Step 2: Convert to fraction form
    62,878.60/94,315.20 = 21,325.60/x
  3. Step 3: Cross multiply
    62,878.60x = 94,315.20 × 21,325.60
  4. Step 4: Simplify right side
    62,878.60x = 2,011,328,229.12
  5. Step 5: Solve for x
    x = 2,011,328,229.12/62,878.60
  6. Step 6: Final answer
    x = 31,987.48

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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.