Home / 85,435.14-117,902.31-47,709.36

Finding the Fourth Proportional to 85,435.14, 117,902.31 and 47,709.36

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Solution

The fourth proportional to 85,435.14, 117,902.31 and 47,709.36 is: 65,839.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,435.14 : 117,902.31 = 47,709.36 : x
  2. Step 2: Convert to fraction form
    85,435.14/117,902.31 = 47,709.36/x
  3. Step 3: Cross multiply
    85,435.14x = 117,902.31 × 47,709.36
  4. Step 4: Simplify right side
    85,435.14x = 5,625,043,752.62
  5. Step 5: Solve for x
    x = 5,625,043,752.62/85,435.14
  6. Step 6: Final answer
    x = 65,839.93

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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.