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Finding the Fourth Proportional to 70,912.59, 97,859.06 and 39,081.42

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Solution

The fourth proportional to 70,912.59, 97,859.06 and 39,081.42 is: 53,932.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,912.59 : 97,859.06 = 39,081.42 : x
  2. Step 2: Convert to fraction form
    70,912.59/97,859.06 = 39,081.42/x
  3. Step 3: Cross multiply
    70,912.59x = 97,859.06 × 39,081.42
  4. Step 4: Simplify right side
    70,912.59x = 3,824,470,829.26
  5. Step 5: Solve for x
    x = 3,824,470,829.26/70,912.59
  6. Step 6: Final answer
    x = 53,932.18

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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.