Home / 81,816.20-122,637.90-46,680.20

Finding the Fourth Proportional to 81,816.20, 122,637.90 and 46,680.20

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Solution

The fourth proportional to 81,816.20, 122,637.90 and 46,680.20 is: 69,971.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,816.20 : 122,637.90 = 46,680.20 : x
  2. Step 2: Convert to fraction form
    81,816.20/122,637.90 = 46,680.20/x
  3. Step 3: Cross multiply
    81,816.20x = 122,637.90 × 46,680.20
  4. Step 4: Simplify right side
    81,816.20x = 5,724,761,699.58
  5. Step 5: Solve for x
    x = 5,724,761,699.58/81,816.20
  6. Step 6: Final answer
    x = 69,971.00

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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.