Home / 85,673.14-118,231.80-56,942.80

Finding the Fourth Proportional to 85,673.14, 118,231.80 and 56,942.80

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Solution

The fourth proportional to 85,673.14, 118,231.80 and 56,942.80 is: 78,582.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,673.14 : 118,231.80 = 56,942.80 : x
  2. Step 2: Convert to fraction form
    85,673.14/118,231.80 = 56,942.80/x
  3. Step 3: Cross multiply
    85,673.14x = 118,231.80 × 56,942.80
  4. Step 4: Simplify right side
    85,673.14x = 6,732,449,552.23
  5. Step 5: Solve for x
    x = 6,732,449,552.23/85,673.14
  6. Step 6: Final answer
    x = 78,582.96

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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.