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Finding the Fourth Proportional to 40,483.25, 60,734.60 and 12,781.25

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Solution

The fourth proportional to 40,483.25, 60,734.60 and 12,781.25 is: 19,174.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,483.25 : 60,734.60 = 12,781.25 : x
  2. Step 2: Convert to fraction form
    40,483.25/60,734.60 = 12,781.25/x
  3. Step 3: Cross multiply
    40,483.25x = 60,734.60 × 12,781.25
  4. Step 4: Simplify right side
    40,483.25x = 776,264,106.25
  5. Step 5: Solve for x
    x = 776,264,106.25/40,483.25
  6. Step 6: Final answer
    x = 19,174.95

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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.