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Finding the Fourth Proportional to 72,944.51, 100,663.44 and 39,410.51

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Solution

The fourth proportional to 72,944.51, 100,663.44 and 39,410.51 is: 54,386.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,944.51 : 100,663.44 = 39,410.51 : x
  2. Step 2: Convert to fraction form
    72,944.51/100,663.44 = 39,410.51/x
  3. Step 3: Cross multiply
    72,944.51x = 100,663.44 × 39,410.51
  4. Step 4: Simplify right side
    72,944.51x = 3,967,197,508.75
  5. Step 5: Solve for x
    x = 3,967,197,508.75/72,944.51
  6. Step 6: Final answer
    x = 54,386.51

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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.