Home / 65,165.40-97,748.10-31,890.60

Finding the Fourth Proportional to 65,165.40, 97,748.10 and 31,890.60

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Solution

The fourth proportional to 65,165.40, 97,748.10 and 31,890.60 is: 47,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,165.40 : 97,748.10 = 31,890.60 : x
  2. Step 2: Convert to fraction form
    65,165.40/97,748.10 = 31,890.60/x
  3. Step 3: Cross multiply
    65,165.40x = 97,748.10 × 31,890.60
  4. Step 4: Simplify right side
    65,165.40x = 3,117,245,557.86
  5. Step 5: Solve for x
    x = 3,117,245,557.86/65,165.40
  6. Step 6: Final answer
    x = 47,835.90

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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.