Home / 81,681.48-122,526.78-29,090.94

Finding the Fourth Proportional to 81,681.48, 122,526.78 and 29,090.94

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Solution

The fourth proportional to 81,681.48, 122,526.78 and 29,090.94 is: 43,638.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,681.48 : 122,526.78 = 29,090.94 : x
  2. Step 2: Convert to fraction form
    81,681.48/122,526.78 = 29,090.94/x
  3. Step 3: Cross multiply
    81,681.48x = 122,526.78 × 29,090.94
  4. Step 4: Simplify right side
    81,681.48x = 3,564,419,205.37
  5. Step 5: Solve for x
    x = 3,564,419,205.37/81,681.48
  6. Step 6: Final answer
    x = 43,638.03

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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.