Home / 87,411.22-120,511.35-57,144.51

Finding the Fourth Proportional to 87,411.22, 120,511.35 and 57,144.51

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Solution

The fourth proportional to 87,411.22, 120,511.35 and 57,144.51 is: 78,783.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,411.22 : 120,511.35 = 57,144.51 : x
  2. Step 2: Convert to fraction form
    87,411.22/120,511.35 = 57,144.51/x
  3. Step 3: Cross multiply
    87,411.22x = 120,511.35 × 57,144.51
  4. Step 4: Simplify right side
    87,411.22x = 6,886,561,156.91
  5. Step 5: Solve for x
    x = 6,886,561,156.91/87,411.22
  6. Step 6: Final answer
    x = 78,783.50

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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.