Home / 46,106.80-69,149.28-21,131.28

Finding the Fourth Proportional to 46,106.80, 69,149.28 and 21,131.28

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Solution

The fourth proportional to 46,106.80, 69,149.28 and 21,131.28 is: 31,691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    46,106.80 : 69,149.28 = 21,131.28 : x
  2. Step 2: Convert to fraction form
    46,106.80/69,149.28 = 21,131.28/x
  3. Step 3: Cross multiply
    46,106.80x = 69,149.28 × 21,131.28
  4. Step 4: Simplify right side
    46,106.80x = 1,461,212,797.48
  5. Step 5: Solve for x
    x = 1,461,212,797.48/46,106.80
  6. Step 6: Final answer
    x = 31,691.92

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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.