Home / 42,848.36-64,286.87-20,659.12

Finding the Fourth Proportional to 42,848.36, 64,286.87 and 20,659.12

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Solution

The fourth proportional to 42,848.36, 64,286.87 and 20,659.12 is: 30,995.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,848.36 : 64,286.87 = 20,659.12 : x
  2. Step 2: Convert to fraction form
    42,848.36/64,286.87 = 20,659.12/x
  3. Step 3: Cross multiply
    42,848.36x = 64,286.87 × 20,659.12
  4. Step 4: Simplify right side
    42,848.36x = 1,328,109,897.74
  5. Step 5: Solve for x
    x = 1,328,109,897.74/42,848.36
  6. Step 6: Final answer
    x = 30,995.58

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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.