Home / 72,286.28-99,754.35-40,455.41

Finding the Fourth Proportional to 72,286.28, 99,754.35 and 40,455.41

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Solution

The fourth proportional to 72,286.28, 99,754.35 and 40,455.41 is: 55,828.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,286.28 : 99,754.35 = 40,455.41 : x
  2. Step 2: Convert to fraction form
    72,286.28/99,754.35 = 40,455.41/x
  3. Step 3: Cross multiply
    72,286.28x = 99,754.35 × 40,455.41
  4. Step 4: Simplify right side
    72,286.28x = 4,035,603,128.53
  5. Step 5: Solve for x
    x = 4,035,603,128.53/72,286.28
  6. Step 6: Final answer
    x = 55,828.06

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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.