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Finding the Fourth Proportional to 39,405, 54,371.46 and 23,490.93

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Solution

The fourth proportional to 39,405, 54,371.46 and 23,490.93 is: 32,413.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,405 : 54,371.46 = 23,490.93 : x
  2. Step 2: Convert to fraction form
    39,405/54,371.46 = 23,490.93/x
  3. Step 3: Cross multiply
    39,405x = 54,371.46 × 23,490.93
  4. Step 4: Simplify right side
    39,405x = 1,277,236,160.86
  5. Step 5: Solve for x
    x = 1,277,236,160.86/39,405
  6. Step 6: Final answer
    x = 32,413.05

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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.