Home / 87,411.16-120,511.26-57,144.44

Finding the Fourth Proportional to 87,411.16, 120,511.26 and 57,144.44

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Solution

The fourth proportional to 87,411.16, 120,511.26 and 57,144.44 is: 78,783.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,411.16 : 120,511.26 = 57,144.44 : x
  2. Step 2: Convert to fraction form
    87,411.16/120,511.26 = 57,144.44/x
  3. Step 3: Cross multiply
    87,411.16x = 120,511.26 × 57,144.44
  4. Step 4: Simplify right side
    87,411.16x = 6,886,548,180.67
  5. Step 5: Solve for x
    x = 6,886,548,180.67/87,411.16
  6. Step 6: Final answer
    x = 78,783.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.