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Finding the Fourth Proportional to 74,437.75, 102,725.72 and 40,903.75

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Solution

The fourth proportional to 74,437.75, 102,725.72 and 40,903.75 is: 56,448.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,437.75 : 102,725.72 = 40,903.75 : x
  2. Step 2: Convert to fraction form
    74,437.75/102,725.72 = 40,903.75/x
  3. Step 3: Cross multiply
    74,437.75x = 102,725.72 × 40,903.75
  4. Step 4: Simplify right side
    74,437.75x = 4,201,867,169.45
  5. Step 5: Solve for x
    x = 4,201,867,169.45/74,437.75
  6. Step 6: Final answer
    x = 56,448.07

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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.