Home / 70,956.24-97,912.80-39,117.12

Finding the Fourth Proportional to 70,956.24, 97,912.80 and 39,117.12

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Solution

The fourth proportional to 70,956.24, 97,912.80 and 39,117.12 is: 53,977.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,956.24 : 97,912.80 = 39,117.12 : x
  2. Step 2: Convert to fraction form
    70,956.24/97,912.80 = 39,117.12/x
  3. Step 3: Cross multiply
    70,956.24x = 97,912.80 × 39,117.12
  4. Step 4: Simplify right side
    70,956.24x = 3,830,066,747.14
  5. Step 5: Solve for x
    x = 3,830,066,747.14/70,956.24
  6. Step 6: Final answer
    x = 53,977.87

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Double scale
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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.