Home / 81,772.05-122,705.67-34,383.71

Finding the Fourth Proportional to 81,772.05, 122,705.67 and 34,383.71

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Solution

The fourth proportional to 81,772.05, 122,705.67 and 34,383.71 is: 51,595.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,772.05 : 122,705.67 = 34,383.71 : x
  2. Step 2: Convert to fraction form
    81,772.05/122,705.67 = 34,383.71/x
  3. Step 3: Cross multiply
    81,772.05x = 122,705.67 × 34,383.71
  4. Step 4: Simplify right side
    81,772.05x = 4,219,076,172.64
  5. Step 5: Solve for x
    x = 4,219,076,172.64/81,772.05
  6. Step 6: Final answer
    x = 51,595.58

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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.