Home / 70,342.89-97,082.43-40,121.28

Finding the Fourth Proportional to 70,342.89, 97,082.43 and 40,121.28

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Solution

The fourth proportional to 70,342.89, 97,082.43 and 40,121.28 is: 55,372.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,342.89 : 97,082.43 = 40,121.28 : x
  2. Step 2: Convert to fraction form
    70,342.89/97,082.43 = 40,121.28/x
  3. Step 3: Cross multiply
    70,342.89x = 97,082.43 × 40,121.28
  4. Step 4: Simplify right side
    70,342.89x = 3,895,071,206.66
  5. Step 5: Solve for x
    x = 3,895,071,206.66/70,342.89
  6. Step 6: Final answer
    x = 55,372.64

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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.