Home / 74,163.69-102,345.99-40,172.55

Finding the Fourth Proportional to 74,163.69, 102,345.99 and 40,172.55

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Solution

The fourth proportional to 74,163.69, 102,345.99 and 40,172.55 is: 55,438.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,163.69 : 102,345.99 = 40,172.55 : x
  2. Step 2: Convert to fraction form
    74,163.69/102,345.99 = 40,172.55/x
  3. Step 3: Cross multiply
    74,163.69x = 102,345.99 × 40,172.55
  4. Step 4: Simplify right side
    74,163.69x = 4,111,499,400.57
  5. Step 5: Solve for x
    x = 4,111,499,400.57/74,163.69
  6. Step 6: Final answer
    x = 55,438.17

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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.