Home / 90,786.63-136,201.82-28,457.13

Finding the Fourth Proportional to 90,786.63, 136,201.82 and 28,457.13

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Solution

The fourth proportional to 90,786.63, 136,201.82 and 28,457.13 is: 42,692.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,786.63 : 136,201.82 = 28,457.13 : x
  2. Step 2: Convert to fraction form
    90,786.63/136,201.82 = 28,457.13/x
  3. Step 3: Cross multiply
    90,786.63x = 136,201.82 × 28,457.13
  4. Step 4: Simplify right side
    90,786.63x = 3,875,912,897.98
  5. Step 5: Solve for x
    x = 3,875,912,897.98/90,786.63
  6. Step 6: Final answer
    x = 42,692.55

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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.