Home / 87,384.85-131,076.36-28,219.21

Finding the Fourth Proportional to 87,384.85, 131,076.36 and 28,219.21

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Solution

The fourth proportional to 87,384.85, 131,076.36 and 28,219.21 is: 42,328.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,384.85 : 131,076.36 = 28,219.21 : x
  2. Step 2: Convert to fraction form
    87,384.85/131,076.36 = 28,219.21/x
  3. Step 3: Cross multiply
    87,384.85x = 131,076.36 × 28,219.21
  4. Step 4: Simplify right side
    87,384.85x = 3,698,871,001.18
  5. Step 5: Solve for x
    x = 3,698,871,001.18/87,384.85
  6. Step 6: Final answer
    x = 42,328.52

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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.