Home / 65,380.20-97,985.98-31,638.28

Finding the Fourth Proportional to 65,380.20, 97,985.98 and 31,638.28

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Solution

The fourth proportional to 65,380.20, 97,985.98 and 31,638.28 is: 47,416.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,380.20 : 97,985.98 = 31,638.28 : x
  2. Step 2: Convert to fraction form
    65,380.20/97,985.98 = 31,638.28/x
  3. Step 3: Cross multiply
    65,380.20x = 97,985.98 × 31,638.28
  4. Step 4: Simplify right side
    65,380.20x = 3,100,107,871.31
  5. Step 5: Solve for x
    x = 3,100,107,871.31/65,380.20
  6. Step 6: Final answer
    x = 47,416.62

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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.