Home / 84,743.58-127,036.86-31,405.83

Finding the Fourth Proportional to 84,743.58, 127,036.86 and 31,405.83

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Solution

The fourth proportional to 84,743.58, 127,036.86 and 31,405.83 is: 47,079.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,743.58 : 127,036.86 = 31,405.83 : x
  2. Step 2: Convert to fraction form
    84,743.58/127,036.86 = 31,405.83/x
  3. Step 3: Cross multiply
    84,743.58x = 127,036.86 × 31,405.83
  4. Step 4: Simplify right side
    84,743.58x = 3,989,698,028.89
  5. Step 5: Solve for x
    x = 3,989,698,028.89/84,743.58
  6. Step 6: Final answer
    x = 47,079.65

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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.