Home / 85,283.19-127,758.54-51,920.52

Finding the Fourth Proportional to 85,283.19, 127,758.54 and 51,920.52

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Solution

The fourth proportional to 85,283.19, 127,758.54 and 51,920.52 is: 77,779.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,283.19 : 127,758.54 = 51,920.52 : x
  2. Step 2: Convert to fraction form
    85,283.19/127,758.54 = 51,920.52/x
  3. Step 3: Cross multiply
    85,283.19x = 127,758.54 × 51,920.52
  4. Step 4: Simplify right side
    85,283.19x = 6,633,289,831.24
  5. Step 5: Solve for x
    x = 6,633,289,831.24/85,283.19
  6. Step 6: Final answer
    x = 77,779.57

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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.