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Finding the Fourth Proportional to 61,467.20, 84,802.56 and 40,258.56

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Solution

The fourth proportional to 61,467.20, 84,802.56 and 40,258.56 is: 55,542.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,467.20 : 84,802.56 = 40,258.56 : x
  2. Step 2: Convert to fraction form
    61,467.20/84,802.56 = 40,258.56/x
  3. Step 3: Cross multiply
    61,467.20x = 84,802.56 × 40,258.56
  4. Step 4: Simplify right side
    61,467.20x = 3,414,028,949.91
  5. Step 5: Solve for x
    x = 3,414,028,949.91/61,467.20
  6. Step 6: Final answer
    x = 55,542.29

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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.