Home / 81,440.44-122,130.70-28,118.88

Finding the Fourth Proportional to 81,440.44, 122,130.70 and 28,118.88

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Solution

The fourth proportional to 81,440.44, 122,130.70 and 28,118.88 is: 42,167.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,440.44 : 122,130.70 = 28,118.88 : x
  2. Step 2: Convert to fraction form
    81,440.44/122,130.70 = 28,118.88/x
  3. Step 3: Cross multiply
    81,440.44x = 122,130.70 × 28,118.88
  4. Step 4: Simplify right side
    81,440.44x = 3,434,178,427.32
  5. Step 5: Solve for x
    x = 3,434,178,427.32/81,440.44
  6. Step 6: Final answer
    x = 42,167.98

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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.