Home / 72,768.97-100,384.42-42,534.54

Finding the Fourth Proportional to 72,768.97, 100,384.42 and 42,534.54

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Solution

The fourth proportional to 72,768.97, 100,384.42 and 42,534.54 is: 58,676.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,768.97 : 100,384.42 = 42,534.54 : x
  2. Step 2: Convert to fraction form
    72,768.97/100,384.42 = 42,534.54/x
  3. Step 3: Cross multiply
    72,768.97x = 100,384.42 × 42,534.54
  4. Step 4: Simplify right side
    72,768.97x = 4,269,805,127.87
  5. Step 5: Solve for x
    x = 4,269,805,127.87/72,768.97
  6. Step 6: Final answer
    x = 58,676.18

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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.