Home / 54,137.50-74,716.95-31,781.50

Finding the Fourth Proportional to 54,137.50, 74,716.95 and 31,781.50

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Solution

The fourth proportional to 54,137.50, 74,716.95 and 31,781.50 is: 43,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,137.50 : 74,716.95 = 31,781.50 : x
  2. Step 2: Convert to fraction form
    54,137.50/74,716.95 = 31,781.50/x
  3. Step 3: Cross multiply
    54,137.50x = 74,716.95 × 31,781.50
  4. Step 4: Simplify right side
    54,137.50x = 2,374,616,746.43
  5. Step 5: Solve for x
    x = 2,374,616,746.43/54,137.50
  6. Step 6: Final answer
    x = 43,862.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.