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Finding the Fourth Proportional to 74,495.44, 102,805.72 and 40,506.20

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Solution

The fourth proportional to 74,495.44, 102,805.72 and 40,506.20 is: 55,899.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,495.44 : 102,805.72 = 40,506.20 : x
  2. Step 2: Convert to fraction form
    74,495.44/102,805.72 = 40,506.20/x
  3. Step 3: Cross multiply
    74,495.44x = 102,805.72 × 40,506.20
  4. Step 4: Simplify right side
    74,495.44x = 4,164,269,055.46
  5. Step 5: Solve for x
    x = 4,164,269,055.46/74,495.44
  6. Step 6: Final answer
    x = 55,899.65

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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.