Home / 81,698.28-122,652.37-62,990.20

Finding the Fourth Proportional to 81,698.28, 122,652.37 and 62,990.20

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Solution

The fourth proportional to 81,698.28, 122,652.37 and 62,990.20 is: 94,566.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,698.28 : 122,652.37 = 62,990.20 : x
  2. Step 2: Convert to fraction form
    81,698.28/122,652.37 = 62,990.20/x
  3. Step 3: Cross multiply
    81,698.28x = 122,652.37 × 62,990.20
  4. Step 4: Simplify right side
    81,698.28x = 7,725,897,316.77
  5. Step 5: Solve for x
    x = 7,725,897,316.77/81,698.28
  6. Step 6: Final answer
    x = 94,566.22

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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.