Home / 90,021.90-135,047.37-27,692.34

Finding the Fourth Proportional to 90,021.90, 135,047.37 and 27,692.34

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Solution

The fourth proportional to 90,021.90, 135,047.37 and 27,692.34 is: 41,542.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,021.90 : 135,047.37 = 27,692.34 : x
  2. Step 2: Convert to fraction form
    90,021.90/135,047.37 = 27,692.34/x
  3. Step 3: Cross multiply
    90,021.90x = 135,047.37 × 27,692.34
  4. Step 4: Simplify right side
    90,021.90x = 3,739,777,686.15
  5. Step 5: Solve for x
    x = 3,739,777,686.15/90,021.90
  6. Step 6: Final answer
    x = 41,542.98

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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.