Home / 85,984.47-118,698.62-57,351.78

Finding the Fourth Proportional to 85,984.47, 118,698.62 and 57,351.78

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Solution

The fourth proportional to 85,984.47, 118,698.62 and 57,351.78 is: 79,172.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,984.47 : 118,698.62 = 57,351.78 : x
  2. Step 2: Convert to fraction form
    85,984.47/118,698.62 = 57,351.78/x
  3. Step 3: Cross multiply
    85,984.47x = 118,698.62 × 57,351.78
  4. Step 4: Simplify right side
    85,984.47x = 6,807,576,853.78
  5. Step 5: Solve for x
    x = 6,807,576,853.78/85,984.47
  6. Step 6: Final answer
    x = 79,172.17

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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.