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Finding the Fourth Proportional to 59,773.36, 82,465.68 and 39,640

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Solution

The fourth proportional to 59,773.36, 82,465.68 and 39,640 is: 54,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,773.36 : 82,465.68 = 39,640 : x
  2. Step 2: Convert to fraction form
    59,773.36/82,465.68 = 39,640/x
  3. Step 3: Cross multiply
    59,773.36x = 82,465.68 × 39,640
  4. Step 4: Simplify right side
    59,773.36x = 3,268,939,555.20
  5. Step 5: Solve for x
    x = 3,268,939,555.20/59,773.36
  6. Step 6: Final answer
    x = 54,688.90

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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.