Home / 87,985.87-131,958.51-52,457.20

Finding the Fourth Proportional to 87,985.87, 131,958.51 and 52,457.20

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Solution

The fourth proportional to 87,985.87, 131,958.51 and 52,457.20 is: 78,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,985.87 : 131,958.51 = 52,457.20 : x
  2. Step 2: Convert to fraction form
    87,985.87/131,958.51 = 52,457.20/x
  3. Step 3: Cross multiply
    87,985.87x = 131,958.51 × 52,457.20
  4. Step 4: Simplify right side
    87,985.87x = 6,922,173,950.77
  5. Step 5: Solve for x
    x = 6,922,173,950.77/87,985.87
  6. Step 6: Final answer
    x = 78,673.70

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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.