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Finding the Fourth Proportional to 72,944.25, 100,663.08 and 39,410.25

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Solution

The fourth proportional to 72,944.25, 100,663.08 and 39,410.25 is: 54,386.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,944.25 : 100,663.08 = 39,410.25 : x
  2. Step 2: Convert to fraction form
    72,944.25/100,663.08 = 39,410.25/x
  3. Step 3: Cross multiply
    72,944.25x = 100,663.08 × 39,410.25
  4. Step 4: Simplify right side
    72,944.25x = 3,967,157,148.57
  5. Step 5: Solve for x
    x = 3,967,157,148.57/72,944.25
  6. Step 6: Final answer
    x = 54,386.15

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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.