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Finding the Fourth Proportional to 69,943.22, 96,518.62 and 39,728.45

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Solution

The fourth proportional to 69,943.22, 96,518.62 and 39,728.45 is: 54,823.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,943.22 : 96,518.62 = 39,728.45 : x
  2. Step 2: Convert to fraction form
    69,943.22/96,518.62 = 39,728.45/x
  3. Step 3: Cross multiply
    69,943.22x = 96,518.62 × 39,728.45
  4. Step 4: Simplify right side
    69,943.22x = 3,834,534,828.12
  5. Step 5: Solve for x
    x = 3,834,534,828.12/69,943.22
  6. Step 6: Final answer
    x = 54,823.54

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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.