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Finding the Fourth Proportional to 74,940.88, 112,417.76 and 30,570.72

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Solution

The fourth proportional to 74,940.88, 112,417.76 and 30,570.72 is: 45,858.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,940.88 : 112,417.76 = 30,570.72 : x
  2. Step 2: Convert to fraction form
    74,940.88/112,417.76 = 30,570.72/x
  3. Step 3: Cross multiply
    74,940.88x = 112,417.76 × 30,570.72
  4. Step 4: Simplify right side
    74,940.88x = 3,436,691,863.99
  5. Step 5: Solve for x
    x = 3,436,691,863.99/74,940.88
  6. Step 6: Final answer
    x = 45,858.71

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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.