Home / 86,651.08-129,985.18-36,039.72

Finding the Fourth Proportional to 86,651.08, 129,985.18 and 36,039.72

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Solution

The fourth proportional to 86,651.08, 129,985.18 and 36,039.72 is: 54,063.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,651.08 : 129,985.18 = 36,039.72 : x
  2. Step 2: Convert to fraction form
    86,651.08/129,985.18 = 36,039.72/x
  3. Step 3: Cross multiply
    86,651.08x = 129,985.18 × 36,039.72
  4. Step 4: Simplify right side
    86,651.08x = 4,684,629,491.35
  5. Step 5: Solve for x
    x = 4,684,629,491.35/86,651.08
  6. Step 6: Final answer
    x = 54,063.14

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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.