Home / 74,009.12-102,132.72-40,475.36

Finding the Fourth Proportional to 74,009.12, 102,132.72 and 40,475.36

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Solution

The fourth proportional to 74,009.12, 102,132.72 and 40,475.36 is: 55,856.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,009.12 : 102,132.72 = 40,475.36 : x
  2. Step 2: Convert to fraction form
    74,009.12/102,132.72 = 40,475.36/x
  3. Step 3: Cross multiply
    74,009.12x = 102,132.72 × 40,475.36
  4. Step 4: Simplify right side
    74,009.12x = 4,133,858,609.78
  5. Step 5: Solve for x
    x = 4,133,858,609.78/74,009.12
  6. Step 6: Final answer
    x = 55,856.07

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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.