Home / 40,735.36-61,019.88-20,972.40

Finding the Fourth Proportional to 40,735.36, 61,019.88 and 20,972.40

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Solution

The fourth proportional to 40,735.36, 61,019.88 and 20,972.40 is: 31,415.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,735.36 : 61,019.88 = 20,972.40 : x
  2. Step 2: Convert to fraction form
    40,735.36/61,019.88 = 20,972.40/x
  3. Step 3: Cross multiply
    40,735.36x = 61,019.88 × 20,972.40
  4. Step 4: Simplify right side
    40,735.36x = 1,279,733,331.31
  5. Step 5: Solve for x
    x = 1,279,733,331.31/40,735.36
  6. Step 6: Final answer
    x = 31,415.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.