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Finding the Fourth Proportional to 74,971.48, 112,401.67 and 45,382.32

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Solution

The fourth proportional to 74,971.48, 112,401.67 and 45,382.32 is: 68,039.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,971.48 : 112,401.67 = 45,382.32 : x
  2. Step 2: Convert to fraction form
    74,971.48/112,401.67 = 45,382.32/x
  3. Step 3: Cross multiply
    74,971.48x = 112,401.67 × 45,382.32
  4. Step 4: Simplify right side
    74,971.48x = 5,101,048,556.47
  5. Step 5: Solve for x
    x = 5,101,048,556.47/74,971.48
  6. Step 6: Final answer
    x = 68,039.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.