Home / 81,615.33-122,443.58-39,515.58

Finding the Fourth Proportional to 81,615.33, 122,443.58 and 39,515.58

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Solution

The fourth proportional to 81,615.33, 122,443.58 and 39,515.58 is: 59,283.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,615.33 : 122,443.58 = 39,515.58 : x
  2. Step 2: Convert to fraction form
    81,615.33/122,443.58 = 39,515.58/x
  3. Step 3: Cross multiply
    81,615.33x = 122,443.58 × 39,515.58
  4. Step 4: Simplify right side
    81,615.33x = 4,838,429,179.77
  5. Step 5: Solve for x
    x = 4,838,429,179.77/81,615.33
  6. Step 6: Final answer
    x = 59,283.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.