Home / 82,570.26-113,742.78-70,431.18

Finding the Fourth Proportional to 82,570.26, 113,742.78 and 70,431.18

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Solution

The fourth proportional to 82,570.26, 113,742.78 and 70,431.18 is: 97,020.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,570.26 : 113,742.78 = 70,431.18 : x
  2. Step 2: Convert to fraction form
    82,570.26/113,742.78 = 70,431.18/x
  3. Step 3: Cross multiply
    82,570.26x = 113,742.78 × 70,431.18
  4. Step 4: Simplify right side
    82,570.26x = 8,011,038,211.88
  5. Step 5: Solve for x
    x = 8,011,038,211.88/82,570.26
  6. Step 6: Final answer
    x = 97,020.87

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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.