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Finding the Fourth Proportional to 70,518.99, 105,768.06 and 23,139.09

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Solution

The fourth proportional to 70,518.99, 105,768.06 and 23,139.09 is: 34,705.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,518.99 : 105,768.06 = 23,139.09 : x
  2. Step 2: Convert to fraction form
    70,518.99/105,768.06 = 23,139.09/x
  3. Step 3: Cross multiply
    70,518.99x = 105,768.06 × 23,139.09
  4. Step 4: Simplify right side
    70,518.99x = 2,447,376,659.47
  5. Step 5: Solve for x
    x = 2,447,376,659.47/70,518.99
  6. Step 6: Final answer
    x = 34,705.21

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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.