Home / 74,368.24-102,628.30-40,376.72

Finding the Fourth Proportional to 74,368.24, 102,628.30 and 40,376.72

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Solution

The fourth proportional to 74,368.24, 102,628.30 and 40,376.72 is: 55,719.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,368.24 : 102,628.30 = 40,376.72 : x
  2. Step 2: Convert to fraction form
    74,368.24/102,628.30 = 40,376.72/x
  3. Step 3: Cross multiply
    74,368.24x = 102,628.30 × 40,376.72
  4. Step 4: Simplify right side
    74,368.24x = 4,143,794,133.18
  5. Step 5: Solve for x
    x = 4,143,794,133.18/74,368.24
  6. Step 6: Final answer
    x = 55,719.94

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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.