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Finding the Fourth Proportional to 72,769.96, 100,437.47 and 42,562.70

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Solution

The fourth proportional to 72,769.96, 100,437.47 and 42,562.70 is: 58,745.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,769.96 : 100,437.47 = 42,562.70 : x
  2. Step 2: Convert to fraction form
    72,769.96/100,437.47 = 42,562.70/x
  3. Step 3: Cross multiply
    72,769.96x = 100,437.47 × 42,562.70
  4. Step 4: Simplify right side
    72,769.96x = 4,274,890,261.87
  5. Step 5: Solve for x
    x = 4,274,890,261.87/72,769.96
  6. Step 6: Final answer
    x = 58,745.26

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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.