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Finding the Fourth Proportional to 72,738, 100,379.86 and 44,058.74

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Solution

The fourth proportional to 72,738, 100,379.86 and 44,058.74 is: 60,801.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,738 : 100,379.86 = 44,058.74 : x
  2. Step 2: Convert to fraction form
    72,738/100,379.86 = 44,058.74/x
  3. Step 3: Cross multiply
    72,738x = 100,379.86 × 44,058.74
  4. Step 4: Simplify right side
    72,738x = 4,422,609,540.93
  5. Step 5: Solve for x
    x = 4,422,609,540.93/72,738
  6. Step 6: Final answer
    x = 60,801.91

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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.