Home / 74,434.48-102,720.42-40,443.03

Finding the Fourth Proportional to 74,434.48, 102,720.42 and 40,443.03

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Solution

The fourth proportional to 74,434.48, 102,720.42 and 40,443.03 is: 55,811.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,434.48 : 102,720.42 = 40,443.03 : x
  2. Step 2: Convert to fraction form
    74,434.48/102,720.42 = 40,443.03/x
  3. Step 3: Cross multiply
    74,434.48x = 102,720.42 × 40,443.03
  4. Step 4: Simplify right side
    74,434.48x = 4,154,325,027.67
  5. Step 5: Solve for x
    x = 4,154,325,027.67/74,434.48
  6. Step 6: Final answer
    x = 55,811.84

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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.