Home / 81,821.76-112,858.50-53,090.08

Finding the Fourth Proportional to 81,821.76, 112,858.50 and 53,090.08

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Solution

The fourth proportional to 81,821.76, 112,858.50 and 53,090.08 is: 73,228.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,821.76 : 112,858.50 = 53,090.08 : x
  2. Step 2: Convert to fraction form
    81,821.76/112,858.50 = 53,090.08/x
  3. Step 3: Cross multiply
    81,821.76x = 112,858.50 × 53,090.08
  4. Step 4: Simplify right side
    81,821.76x = 5,991,666,793.68
  5. Step 5: Solve for x
    x = 5,991,666,793.68/81,821.76
  6. Step 6: Final answer
    x = 73,228.28

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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.