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Finding the Fourth Proportional to 87,482.21, 120,683.87 and 51,648.22

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Solution

The fourth proportional to 87,482.21, 120,683.87 and 51,648.22 is: 71,249.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,482.21 : 120,683.87 = 51,648.22 : x
  2. Step 2: Convert to fraction form
    87,482.21/120,683.87 = 51,648.22/x
  3. Step 3: Cross multiply
    87,482.21x = 120,683.87 × 51,648.22
  4. Step 4: Simplify right side
    87,482.21x = 6,233,106,464.79
  5. Step 5: Solve for x
    x = 6,233,106,464.79/87,482.21
  6. Step 6: Final answer
    x = 71,249.99

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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.