Home / 81,811.80-122,499-46,703.16

Finding the Fourth Proportional to 81,811.80, 122,499 and 46,703.16

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Solution

The fourth proportional to 81,811.80, 122,499 and 46,703.16 is: 69,929.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,811.80 : 122,499 = 46,703.16 : x
  2. Step 2: Convert to fraction form
    81,811.80/122,499 = 46,703.16/x
  3. Step 3: Cross multiply
    81,811.80x = 122,499 × 46,703.16
  4. Step 4: Simplify right side
    81,811.80x = 5,721,090,396.84
  5. Step 5: Solve for x
    x = 5,721,090,396.84/81,811.80
  6. Step 6: Final answer
    x = 69,929.89

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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.