Home / 85,394.21-117,828.48-59,978.23

Finding the Fourth Proportional to 85,394.21, 117,828.48 and 59,978.23

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Solution

The fourth proportional to 85,394.21, 117,828.48 and 59,978.23 is: 82,759.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,394.21 : 117,828.48 = 59,978.23 : x
  2. Step 2: Convert to fraction form
    85,394.21/117,828.48 = 59,978.23/x
  3. Step 3: Cross multiply
    85,394.21x = 117,828.48 × 59,978.23
  4. Step 4: Simplify right side
    85,394.21x = 7,067,143,673.99
  5. Step 5: Solve for x
    x = 7,067,143,673.99/85,394.21
  6. Step 6: Final answer
    x = 82,759.05

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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.