Home / 77,068.18-115,650.87-30,314.98

Finding the Fourth Proportional to 77,068.18, 115,650.87 and 30,314.98

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Solution

The fourth proportional to 77,068.18, 115,650.87 and 30,314.98 is: 45,491.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,068.18 : 115,650.87 = 30,314.98 : x
  2. Step 2: Convert to fraction form
    77,068.18/115,650.87 = 30,314.98/x
  3. Step 3: Cross multiply
    77,068.18x = 115,650.87 × 30,314.98
  4. Step 4: Simplify right side
    77,068.18x = 3,505,953,811.03
  5. Step 5: Solve for x
    x = 3,505,953,811.03/77,068.18
  6. Step 6: Final answer
    x = 45,491.59

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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.