Home / 81,561.33-112,539.02-49,289.40

Finding the Fourth Proportional to 81,561.33, 112,539.02 and 49,289.40

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Solution

The fourth proportional to 81,561.33, 112,539.02 and 49,289.40 is: 68,009.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,561.33 : 112,539.02 = 49,289.40 : x
  2. Step 2: Convert to fraction form
    81,561.33/112,539.02 = 49,289.40/x
  3. Step 3: Cross multiply
    81,561.33x = 112,539.02 × 49,289.40
  4. Step 4: Simplify right side
    81,561.33x = 5,546,980,525.94
  5. Step 5: Solve for x
    x = 5,546,980,525.94/81,561.33
  6. Step 6: Final answer
    x = 68,009.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.