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Finding the Fourth Proportional to 72,935.07, 100,650.36 and 39,401.07

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Solution

The fourth proportional to 72,935.07, 100,650.36 and 39,401.07 is: 54,373.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,935.07 : 100,650.36 = 39,401.07 : x
  2. Step 2: Convert to fraction form
    72,935.07/100,650.36 = 39,401.07/x
  3. Step 3: Cross multiply
    72,935.07x = 100,650.36 × 39,401.07
  4. Step 4: Simplify right side
    72,935.07x = 3,965,731,879.89
  5. Step 5: Solve for x
    x = 3,965,731,879.89/72,935.07
  6. Step 6: Final answer
    x = 54,373.46

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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.