Home / 70,921.50-97,871.67-39,090.75

Finding the Fourth Proportional to 70,921.50, 97,871.67 and 39,090.75

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Solution

The fourth proportional to 70,921.50, 97,871.67 and 39,090.75 is: 53,945.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,921.50 : 97,871.67 = 39,090.75 : x
  2. Step 2: Convert to fraction form
    70,921.50/97,871.67 = 39,090.75/x
  3. Step 3: Cross multiply
    70,921.50x = 97,871.67 × 39,090.75
  4. Step 4: Simplify right side
    70,921.50x = 3,825,876,984.05
  5. Step 5: Solve for x
    x = 3,825,876,984.05/70,921.50
  6. Step 6: Final answer
    x = 53,945.24

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1.5x scale

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.