Home / 81,135.07-111,966.24-48,888.36

Finding the Fourth Proportional to 81,135.07, 111,966.24 and 48,888.36

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Solution

The fourth proportional to 81,135.07, 111,966.24 and 48,888.36 is: 67,465.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,135.07 : 111,966.24 = 48,888.36 : x
  2. Step 2: Convert to fraction form
    81,135.07/111,966.24 = 48,888.36/x
  3. Step 3: Cross multiply
    81,135.07x = 111,966.24 × 48,888.36
  4. Step 4: Simplify right side
    81,135.07x = 5,473,845,289.14
  5. Step 5: Solve for x
    x = 5,473,845,289.14/81,135.07
  6. Step 6: Final answer
    x = 67,465.84

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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.