Home / 72,947.70-100,692.94-42,742.80

Finding the Fourth Proportional to 72,947.70, 100,692.94 and 42,742.80

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Solution

The fourth proportional to 72,947.70, 100,692.94 and 42,742.80 is: 58,999.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,947.70 : 100,692.94 = 42,742.80 : x
  2. Step 2: Convert to fraction form
    72,947.70/100,692.94 = 42,742.80/x
  3. Step 3: Cross multiply
    72,947.70x = 100,692.94 × 42,742.80
  4. Step 4: Simplify right side
    72,947.70x = 4,303,898,554.42
  5. Step 5: Solve for x
    x = 4,303,898,554.42/72,947.70
  6. Step 6: Final answer
    x = 58,999.78

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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.