Home / 79,521.60-109,740.06-43,715.28

Finding the Fourth Proportional to 79,521.60, 109,740.06 and 43,715.28

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Solution

The fourth proportional to 79,521.60, 109,740.06 and 43,715.28 is: 60,327.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,521.60 : 109,740.06 = 43,715.28 : x
  2. Step 2: Convert to fraction form
    79,521.60/109,740.06 = 43,715.28/x
  3. Step 3: Cross multiply
    79,521.60x = 109,740.06 × 43,715.28
  4. Step 4: Simplify right side
    79,521.60x = 4,797,317,450.12
  5. Step 5: Solve for x
    x = 4,797,317,450.12/79,521.60
  6. Step 6: Final answer
    x = 60,327.22

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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.