Home / 81,970.31-122,931.17-35,212.25

Finding the Fourth Proportional to 81,970.31, 122,931.17 and 35,212.25

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Solution

The fourth proportional to 81,970.31, 122,931.17 and 35,212.25 is: 52,807.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,970.31 : 122,931.17 = 35,212.25 : x
  2. Step 2: Convert to fraction form
    81,970.31/122,931.17 = 35,212.25/x
  3. Step 3: Cross multiply
    81,970.31x = 122,931.17 × 35,212.25
  4. Step 4: Simplify right side
    81,970.31x = 4,328,682,914.77
  5. Step 5: Solve for x
    x = 4,328,682,914.77/81,970.31
  6. Step 6: Final answer
    x = 52,807.94

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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.