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Finding the Fourth Proportional to 72,951.56, 100,673.15 and 39,417.56

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Solution

The fourth proportional to 72,951.56, 100,673.15 and 39,417.56 is: 54,396.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,951.56 : 100,673.15 = 39,417.56 : x
  2. Step 2: Convert to fraction form
    72,951.56/100,673.15 = 39,417.56/x
  3. Step 3: Cross multiply
    72,951.56x = 100,673.15 × 39,417.56
  4. Step 4: Simplify right side
    72,951.56x = 3,968,289,930.51
  5. Step 5: Solve for x
    x = 3,968,289,930.51/72,951.56
  6. Step 6: Final answer
    x = 54,396.23

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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.