Home / 81,532.80-122,307.57-28,224.70

Finding the Fourth Proportional to 81,532.80, 122,307.57 and 28,224.70

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Solution

The fourth proportional to 81,532.80, 122,307.57 and 28,224.70 is: 42,339.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,532.80 : 122,307.57 = 28,224.70 : x
  2. Step 2: Convert to fraction form
    81,532.80/122,307.57 = 28,224.70/x
  3. Step 3: Cross multiply
    81,532.80x = 122,307.57 × 28,224.70
  4. Step 4: Simplify right side
    81,532.80x = 3,452,094,165.21
  5. Step 5: Solve for x
    x = 3,452,094,165.21/81,532.80
  6. Step 6: Final answer
    x = 42,339.94

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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.