Home / 70,769.72-97,660.20-38,938.64

Finding the Fourth Proportional to 70,769.72, 97,660.20 and 38,938.64

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Solution

The fourth proportional to 70,769.72, 97,660.20 and 38,938.64 is: 53,734.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,769.72 : 97,660.20 = 38,938.64 : x
  2. Step 2: Convert to fraction form
    70,769.72/97,660.20 = 38,938.64/x
  3. Step 3: Cross multiply
    70,769.72x = 97,660.20 × 38,938.64
  4. Step 4: Simplify right side
    70,769.72x = 3,802,755,370.13
  5. Step 5: Solve for x
    x = 3,802,755,370.13/70,769.72
  6. Step 6: Final answer
    x = 53,734.22

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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.