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Finding the Fourth Proportional to 53,884.56, 74,394.74 and 39,712.72

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Solution

The fourth proportional to 53,884.56, 74,394.74 and 39,712.72 is: 54,828.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,884.56 : 74,394.74 = 39,712.72 : x
  2. Step 2: Convert to fraction form
    53,884.56/74,394.74 = 39,712.72/x
  3. Step 3: Cross multiply
    53,884.56x = 74,394.74 × 39,712.72
  4. Step 4: Simplify right side
    53,884.56x = 2,954,417,479.09
  5. Step 5: Solve for x
    x = 2,954,417,479.09/53,884.56
  6. Step 6: Final answer
    x = 54,828.65

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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.