Home / 81,515.00-112,372.59-57,242.03

Finding the Fourth Proportional to 81,515.00, 112,372.59 and 57,242.03

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Solution

The fourth proportional to 81,515.00, 112,372.59 and 57,242.03 is: 78,911.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,515.00 : 112,372.59 = 57,242.03 : x
  2. Step 2: Convert to fraction form
    81,515.00/112,372.59 = 57,242.03/x
  3. Step 3: Cross multiply
    81,515.00x = 112,372.59 × 57,242.03
  4. Step 4: Simplify right side
    81,515.00x = 6,432,435,448.89
  5. Step 5: Solve for x
    x = 6,432,435,448.89/81,515.00
  6. Step 6: Final answer
    x = 78,911.06

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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.