Home / 72,012.84-99,377.34-40,181.68

Finding the Fourth Proportional to 72,012.84, 99,377.34 and 40,181.68

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Solution

The fourth proportional to 72,012.84, 99,377.34 and 40,181.68 is: 55,450.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,012.84 : 99,377.34 = 40,181.68 : x
  2. Step 2: Convert to fraction form
    72,012.84/99,377.34 = 40,181.68/x
  3. Step 3: Cross multiply
    72,012.84x = 99,377.34 × 40,181.68
  4. Step 4: Simplify right side
    72,012.84x = 3,993,148,475.13
  5. Step 5: Solve for x
    x = 3,993,148,475.13/72,012.84
  6. Step 6: Final answer
    x = 55,450.51

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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.