Home / 85,678.16-118,231.97-47,435.00

Finding the Fourth Proportional to 85,678.16, 118,231.97 and 47,435.00

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Solution

The fourth proportional to 85,678.16, 118,231.97 and 47,435.00 is: 65,458.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,678.16 : 118,231.97 = 47,435.00 : x
  2. Step 2: Convert to fraction form
    85,678.16/118,231.97 = 47,435.00/x
  3. Step 3: Cross multiply
    85,678.16x = 118,231.97 × 47,435.00
  4. Step 4: Simplify right side
    85,678.16x = 5,608,332,668.62
  5. Step 5: Solve for x
    x = 5,608,332,668.62/85,678.16
  6. Step 6: Final answer
    x = 65,458.14

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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.