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Finding the Fourth Proportional to 70,530.09, 105,792.40 and 17,940.94

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Solution

The fourth proportional to 70,530.09, 105,792.40 and 17,940.94 is: 26,910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,530.09 : 105,792.40 = 17,940.94 : x
  2. Step 2: Convert to fraction form
    70,530.09/105,792.40 = 17,940.94/x
  3. Step 3: Cross multiply
    70,530.09x = 105,792.40 × 17,940.94
  4. Step 4: Simplify right side
    70,530.09x = 1,898,015,504.34
  5. Step 5: Solve for x
    x = 1,898,015,504.34/70,530.09
  6. Step 6: Final answer
    x = 26,910.72

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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.