Home / 72,989.06-100,724.97-42,768.36

Finding the Fourth Proportional to 72,989.06, 100,724.97 and 42,768.36

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Solution

The fourth proportional to 72,989.06, 100,724.97 and 42,768.36 is: 59,020.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,989.06 : 100,724.97 = 42,768.36 : x
  2. Step 2: Convert to fraction form
    72,989.06/100,724.97 = 42,768.36/x
  3. Step 3: Cross multiply
    72,989.06x = 100,724.97 × 42,768.36
  4. Step 4: Simplify right side
    72,989.06x = 4,307,841,777.95
  5. Step 5: Solve for x
    x = 4,307,841,777.95/72,989.06
  6. Step 6: Final answer
    x = 59,020.38

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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.