Home / 81,349.56-122,041.45-28,046.50

Finding the Fourth Proportional to 81,349.56, 122,041.45 and 28,046.50

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Solution

The fourth proportional to 81,349.56, 122,041.45 and 28,046.50 is: 42,075.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,349.56 : 122,041.45 = 28,046.50 : x
  2. Step 2: Convert to fraction form
    81,349.56/122,041.45 = 28,046.50/x
  3. Step 3: Cross multiply
    81,349.56x = 122,041.45 × 28,046.50
  4. Step 4: Simplify right side
    81,349.56x = 3,422,835,527.43
  5. Step 5: Solve for x
    x = 3,422,835,527.43/81,349.56
  6. Step 6: Final answer
    x = 42,075.65

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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.