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Finding the Fourth Proportional to 53,891.80, 74,370.80 and 31,235.16

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Solution

The fourth proportional to 53,891.80, 74,370.80 and 31,235.16 is: 43,104.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,891.80 : 74,370.80 = 31,235.16 : x
  2. Step 2: Convert to fraction form
    53,891.80/74,370.80 = 31,235.16/x
  3. Step 3: Cross multiply
    53,891.80x = 74,370.80 × 31,235.16
  4. Step 4: Simplify right side
    53,891.80x = 2,322,983,837.33
  5. Step 5: Solve for x
    x = 2,322,983,837.33/53,891.80
  6. Step 6: Final answer
    x = 43,104.59

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1.5x scale

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.