Home / 74,123.54-102,289.23-40,131.75

Finding the Fourth Proportional to 74,123.54, 102,289.23 and 40,131.75

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Solution

The fourth proportional to 74,123.54, 102,289.23 and 40,131.75 is: 55,381.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,123.54 : 102,289.23 = 40,131.75 : x
  2. Step 2: Convert to fraction form
    74,123.54/102,289.23 = 40,131.75/x
  3. Step 3: Cross multiply
    74,123.54x = 102,289.23 × 40,131.75
  4. Step 4: Simplify right side
    74,123.54x = 4,105,045,727.13
  5. Step 5: Solve for x
    x = 4,105,045,727.13/74,123.54
  6. Step 6: Final answer
    x = 55,381.14

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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.