Home / 77,188.60-115,782.76-39,759.37

Finding the Fourth Proportional to 77,188.60, 115,782.76 and 39,759.37

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Solution

The fourth proportional to 77,188.60, 115,782.76 and 39,759.37 is: 59,638.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,188.60 : 115,782.76 = 39,759.37 : x
  2. Step 2: Convert to fraction form
    77,188.60/115,782.76 = 39,759.37/x
  3. Step 3: Cross multiply
    77,188.60x = 115,782.76 × 39,759.37
  4. Step 4: Simplify right side
    77,188.60x = 4,603,449,594.46
  5. Step 5: Solve for x
    x = 4,603,449,594.46/77,188.60
  6. Step 6: Final answer
    x = 59,638.98

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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.