Home / 65,085.12-97,615.44-20,712.36

Finding the Fourth Proportional to 65,085.12, 97,615.44 and 20,712.36

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Solution

The fourth proportional to 65,085.12, 97,615.44 and 20,712.36 is: 31,064.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,085.12 : 97,615.44 = 20,712.36 : x
  2. Step 2: Convert to fraction form
    65,085.12/97,615.44 = 20,712.36/x
  3. Step 3: Cross multiply
    65,085.12x = 97,615.44 × 20,712.36
  4. Step 4: Simplify right side
    65,085.12x = 2,021,846,134.84
  5. Step 5: Solve for x
    x = 2,021,846,134.84/65,085.12
  6. Step 6: Final answer
    x = 31,064.64

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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.