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Finding the Fourth Proportional to 55,692.40, 83,400.12 and 38,974.18

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Solution

The fourth proportional to 55,692.40, 83,400.12 and 38,974.18 is: 58,364.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,692.40 : 83,400.12 = 38,974.18 : x
  2. Step 2: Convert to fraction form
    55,692.40/83,400.12 = 38,974.18/x
  3. Step 3: Cross multiply
    55,692.40x = 83,400.12 × 38,974.18
  4. Step 4: Simplify right side
    55,692.40x = 3,250,451,288.90
  5. Step 5: Solve for x
    x = 3,250,451,288.90/55,692.40
  6. Step 6: Final answer
    x = 58,364.36

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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.