Home / 38,640.19-53,365.53-31,111.44

Finding the Fourth Proportional to 38,640.19, 53,365.53 and 31,111.44

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Solution

The fourth proportional to 38,640.19, 53,365.53 and 31,111.44 is: 42,967.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,640.19 : 53,365.53 = 31,111.44 : x
  2. Step 2: Convert to fraction form
    38,640.19/53,365.53 = 31,111.44/x
  3. Step 3: Cross multiply
    38,640.19x = 53,365.53 × 31,111.44
  4. Step 4: Simplify right side
    38,640.19x = 1,660,278,701.39
  5. Step 5: Solve for x
    x = 1,660,278,701.39/38,640.19
  6. Step 6: Final answer
    x = 42,967.66

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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.