Home / 81,368.54-122,131.61-39,278.17

Finding the Fourth Proportional to 81,368.54, 122,131.61 and 39,278.17

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Solution

The fourth proportional to 81,368.54, 122,131.61 and 39,278.17 is: 58,955.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,368.54 : 122,131.61 = 39,278.17 : x
  2. Step 2: Convert to fraction form
    81,368.54/122,131.61 = 39,278.17/x
  3. Step 3: Cross multiply
    81,368.54x = 122,131.61 × 39,278.17
  4. Step 4: Simplify right side
    81,368.54x = 4,797,106,139.95
  5. Step 5: Solve for x
    x = 4,797,106,139.95/81,368.54
  6. Step 6: Final answer
    x = 58,955.29

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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.