Home / 74,163.50-102,345.72-40,172.04

Finding the Fourth Proportional to 74,163.50, 102,345.72 and 40,172.04

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Solution

The fourth proportional to 74,163.50, 102,345.72 and 40,172.04 is: 55,437.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,163.50 : 102,345.72 = 40,172.04 : x
  2. Step 2: Convert to fraction form
    74,163.50/102,345.72 = 40,172.04/x
  3. Step 3: Cross multiply
    74,163.50x = 102,345.72 × 40,172.04
  4. Step 4: Simplify right side
    74,163.50x = 4,111,436,357.67
  5. Step 5: Solve for x
    x = 4,111,436,357.67/74,163.50
  6. Step 6: Final answer
    x = 55,437.46

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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.