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Finding the Fourth Proportional to 73,984.79, 102,099.77 and 39,993.95

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Solution

The fourth proportional to 73,984.79, 102,099.77 and 39,993.95 is: 55,192.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,984.79 : 102,099.77 = 39,993.95 : x
  2. Step 2: Convert to fraction form
    73,984.79/102,099.77 = 39,993.95/x
  3. Step 3: Cross multiply
    73,984.79x = 102,099.77 × 39,993.95
  4. Step 4: Simplify right side
    73,984.79x = 4,083,373,189.17
  5. Step 5: Solve for x
    x = 4,083,373,189.17/73,984.79
  6. Step 6: Final answer
    x = 55,192.06

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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.