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Finding the Fourth Proportional to 55,692.48, 83,485.44 and 20,622.72

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Solution

The fourth proportional to 55,692.48, 83,485.44 and 20,622.72 is: 30,914.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,692.48 : 83,485.44 = 20,622.72 : x
  2. Step 2: Convert to fraction form
    55,692.48/83,485.44 = 20,622.72/x
  3. Step 3: Cross multiply
    55,692.48x = 83,485.44 × 20,622.72
  4. Step 4: Simplify right side
    55,692.48x = 1,721,696,853.20
  5. Step 5: Solve for x
    x = 1,721,696,853.20/55,692.48
  6. Step 6: Final answer
    x = 30,914.35

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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.