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Finding the Fourth Proportional to 70,085.56, 105,161.14 and 30,637.56

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Solution

The fourth proportional to 70,085.56, 105,161.14 and 30,637.56 is: 45,970.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,085.56 : 105,161.14 = 30,637.56 : x
  2. Step 2: Convert to fraction form
    70,085.56/105,161.14 = 30,637.56/x
  3. Step 3: Cross multiply
    70,085.56x = 105,161.14 × 30,637.56
  4. Step 4: Simplify right side
    70,085.56x = 3,221,880,736.42
  5. Step 5: Solve for x
    x = 3,221,880,736.42/70,085.56
  6. Step 6: Final answer
    x = 45,970.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.