Home / 72,427.72-99,950.47-40,164.61

Finding the Fourth Proportional to 72,427.72, 99,950.47 and 40,164.61

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Solution

The fourth proportional to 72,427.72, 99,950.47 and 40,164.61 is: 55,427.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,427.72 : 99,950.47 = 40,164.61 : x
  2. Step 2: Convert to fraction form
    72,427.72/99,950.47 = 40,164.61/x
  3. Step 3: Cross multiply
    72,427.72x = 99,950.47 × 40,164.61
  4. Step 4: Simplify right side
    72,427.72x = 4,014,471,497.40
  5. Step 5: Solve for x
    x = 4,014,471,497.40/72,427.72
  6. Step 6: Final answer
    x = 55,427.28

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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.