Home / 65,131.20-97,690.40-20,750.08

Finding the Fourth Proportional to 65,131.20, 97,690.40 and 20,750.08

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Solution

The fourth proportional to 65,131.20, 97,690.40 and 20,750.08 is: 31,123.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,131.20 : 97,690.40 = 20,750.08 : x
  2. Step 2: Convert to fraction form
    65,131.20/97,690.40 = 20,750.08/x
  3. Step 3: Cross multiply
    65,131.20x = 97,690.40 × 20,750.08
  4. Step 4: Simplify right side
    65,131.20x = 2,027,083,615.23
  5. Step 5: Solve for x
    x = 2,027,083,615.23/65,131.20
  6. Step 6: Final answer
    x = 31,123.08

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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.