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Finding the Fourth Proportional to 87,383.70, 131,075.55 and 55,890.90

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Solution

The fourth proportional to 87,383.70, 131,075.55 and 55,890.90 is: 83,836.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,383.70 : 131,075.55 = 55,890.90 : x
  2. Step 2: Convert to fraction form
    87,383.70/131,075.55 = 55,890.90/x
  3. Step 3: Cross multiply
    87,383.70x = 131,075.55 × 55,890.90
  4. Step 4: Simplify right side
    87,383.70x = 7,325,930,457.50
  5. Step 5: Solve for x
    x = 7,325,930,457.50/87,383.70
  6. Step 6: Final answer
    x = 83,836.35

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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.