Home / 76,814.69-115,045.00-74,155.07

Finding the Fourth Proportional to 76,814.69, 115,045.00 and 74,155.07

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Solution

The fourth proportional to 76,814.69, 115,045.00 and 74,155.07 is: 111,061.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,814.69 : 115,045.00 = 74,155.07 : x
  2. Step 2: Convert to fraction form
    76,814.69/115,045.00 = 74,155.07/x
  3. Step 3: Cross multiply
    76,814.69x = 115,045.00 × 74,155.07
  4. Step 4: Simplify right side
    76,814.69x = 8,531,170,130.37
  5. Step 5: Solve for x
    x = 8,531,170,130.37/76,814.69
  6. Step 6: Final answer
    x = 111,061.71

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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.