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Finding the Fourth Proportional to 72,040.70, 107,923.35 and 38,749.70

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Solution

The fourth proportional to 72,040.70, 107,923.35 and 38,749.70 is: 58,050.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,040.70 : 107,923.35 = 38,749.70 : x
  2. Step 2: Convert to fraction form
    72,040.70/107,923.35 = 38,749.70/x
  3. Step 3: Cross multiply
    72,040.70x = 107,923.35 × 38,749.70
  4. Step 4: Simplify right side
    72,040.70x = 4,181,997,435.50
  5. Step 5: Solve for x
    x = 4,181,997,435.50/72,040.70
  6. Step 6: Final answer
    x = 58,050.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.