Home / 81,360.20-122,048.50-28,045.16

Finding the Fourth Proportional to 81,360.20, 122,048.50 and 28,045.16

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Solution

The fourth proportional to 81,360.20, 122,048.50 and 28,045.16 is: 42,070.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,360.20 : 122,048.50 = 28,045.16 : x
  2. Step 2: Convert to fraction form
    81,360.20/122,048.50 = 28,045.16/x
  3. Step 3: Cross multiply
    81,360.20x = 122,048.50 × 28,045.16
  4. Step 4: Simplify right side
    81,360.20x = 3,422,869,804.56
  5. Step 5: Solve for x
    x = 3,422,869,804.56/81,360.20
  6. Step 6: Final answer
    x = 42,070.57

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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.