Home / 87,477.21-131,236.63-28,312.87

Finding the Fourth Proportional to 87,477.21, 131,236.63 and 28,312.87

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Solution

The fourth proportional to 87,477.21, 131,236.63 and 28,312.87 is: 42,476.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,477.21 : 131,236.63 = 28,312.87 : x
  2. Step 2: Convert to fraction form
    87,477.21/131,236.63 = 28,312.87/x
  3. Step 3: Cross multiply
    87,477.21x = 131,236.63 × 28,312.87
  4. Step 4: Simplify right side
    87,477.21x = 3,715,685,502.86
  5. Step 5: Solve for x
    x = 3,715,685,502.86/87,477.21
  6. Step 6: Final answer
    x = 42,476.04

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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.