Home / 81,491.09-122,271.75-44,077.50

Finding the Fourth Proportional to 81,491.09, 122,271.75 and 44,077.50

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Solution

The fourth proportional to 81,491.09, 122,271.75 and 44,077.50 is: 66,135.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,491.09 : 122,271.75 = 44,077.50 : x
  2. Step 2: Convert to fraction form
    81,491.09/122,271.75 = 44,077.50/x
  3. Step 3: Cross multiply
    81,491.09x = 122,271.75 × 44,077.50
  4. Step 4: Simplify right side
    81,491.09x = 5,389,433,060.63
  5. Step 5: Solve for x
    x = 5,389,433,060.63/81,491.09
  6. Step 6: Final answer
    x = 66,135.25

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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.