Home / 76,972.98-106,296.07-72,779.63

Finding the Fourth Proportional to 76,972.98, 106,296.07 and 72,779.63

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Solution

The fourth proportional to 76,972.98, 106,296.07 and 72,779.63 is: 100,505.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,972.98 : 106,296.07 = 72,779.63 : x
  2. Step 2: Convert to fraction form
    76,972.98/106,296.07 = 72,779.63/x
  3. Step 3: Cross multiply
    76,972.98x = 106,296.07 × 72,779.63
  4. Step 4: Simplify right side
    76,972.98x = 7,736,188,645.05
  5. Step 5: Solve for x
    x = 7,736,188,645.05/76,972.98
  6. Step 6: Final answer
    x = 100,505.25

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1.5x scale

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.