Home / 81,816.87-122,528.48-46,649.91

Finding the Fourth Proportional to 81,816.87, 122,528.48 and 46,649.91

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Solution

The fourth proportional to 81,816.87, 122,528.48 and 46,649.91 is: 69,862.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,816.87 : 122,528.48 = 46,649.91 : x
  2. Step 2: Convert to fraction form
    81,816.87/122,528.48 = 46,649.91/x
  3. Step 3: Cross multiply
    81,816.87x = 122,528.48 × 46,649.91
  4. Step 4: Simplify right side
    81,816.87x = 5,715,942,331.19
  5. Step 5: Solve for x
    x = 5,715,942,331.19/81,816.87
  6. Step 6: Final answer
    x = 69,862.64

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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.