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Finding the Fourth Proportional to 85,668.44, 118,169.08 and 61,830.14

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Solution

The fourth proportional to 85,668.44, 118,169.08 and 61,830.14 is: 85,287.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,668.44 : 118,169.08 = 61,830.14 : x
  2. Step 2: Convert to fraction form
    85,668.44/118,169.08 = 61,830.14/x
  3. Step 3: Cross multiply
    85,668.44x = 118,169.08 × 61,830.14
  4. Step 4: Simplify right side
    85,668.44x = 7,306,410,014.65
  5. Step 5: Solve for x
    x = 7,306,410,014.65/85,668.44
  6. Step 6: Final answer
    x = 85,287.07

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1.5x scale

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.