Home / 70,921.68-97,872.37-39,090.58

Finding the Fourth Proportional to 70,921.68, 97,872.37 and 39,090.58

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Solution

The fourth proportional to 70,921.68, 97,872.37 and 39,090.58 is: 53,945.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,921.68 : 97,872.37 = 39,090.58 : x
  2. Step 2: Convert to fraction form
    70,921.68/97,872.37 = 39,090.58/x
  3. Step 3: Cross multiply
    70,921.68x = 97,872.37 × 39,090.58
  4. Step 4: Simplify right side
    70,921.68x = 3,825,887,709.27
  5. Step 5: Solve for x
    x = 3,825,887,709.27/70,921.68
  6. Step 6: Final answer
    x = 53,945.25

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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.