Home / 74,809.11-103,143.20-47,907.39

Finding the Fourth Proportional to 74,809.11, 103,143.20 and 47,907.39

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Solution

The fourth proportional to 74,809.11, 103,143.20 and 47,907.39 is: 66,052.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,809.11 : 103,143.20 = 47,907.39 : x
  2. Step 2: Convert to fraction form
    74,809.11/103,143.20 = 47,907.39/x
  3. Step 3: Cross multiply
    74,809.11x = 103,143.20 × 47,907.39
  4. Step 4: Simplify right side
    74,809.11x = 4,941,321,268.71
  5. Step 5: Solve for x
    x = 4,941,321,268.71/74,809.11
  6. Step 6: Final answer
    x = 66,052.40

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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.