Home / 87,686.08-131,496.64-31,511.05

Finding the Fourth Proportional to 87,686.08, 131,496.64 and 31,511.05

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Solution

The fourth proportional to 87,686.08, 131,496.64 and 31,511.05 is: 47,254.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,686.08 : 131,496.64 = 31,511.05 : x
  2. Step 2: Convert to fraction form
    87,686.08/131,496.64 = 31,511.05/x
  3. Step 3: Cross multiply
    87,686.08x = 131,496.64 × 31,511.05
  4. Step 4: Simplify right side
    87,686.08x = 4,143,596,790.35
  5. Step 5: Solve for x
    x = 4,143,596,790.35/87,686.08
  6. Step 6: Final answer
    x = 47,254.90

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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.