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Finding the Fourth Proportional to 87,008.92, 120,069.84 and 51,190.72

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Solution

The fourth proportional to 87,008.92, 120,069.84 and 51,190.72 is: 70,641.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,008.92 : 120,069.84 = 51,190.72 : x
  2. Step 2: Convert to fraction form
    87,008.92/120,069.84 = 51,190.72/x
  3. Step 3: Cross multiply
    87,008.92x = 120,069.84 × 51,190.72
  4. Step 4: Simplify right side
    87,008.92x = 6,146,461,559.88
  5. Step 5: Solve for x
    x = 6,146,461,559.88/87,008.92
  6. Step 6: Final answer
    x = 70,641.74

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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.