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Finding the Fourth Proportional to 65,220.58, 97,818.03 and 20,835.37

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Solution

The fourth proportional to 65,220.58, 97,818.03 and 20,835.37 is: 31,248.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,220.58 : 97,818.03 = 20,835.37 : x
  2. Step 2: Convert to fraction form
    65,220.58/97,818.03 = 20,835.37/x
  3. Step 3: Cross multiply
    65,220.58x = 97,818.03 × 20,835.37
  4. Step 4: Simplify right side
    65,220.58x = 2,038,074,847.72
  5. Step 5: Solve for x
    x = 2,038,074,847.72/65,220.58
  6. Step 6: Final answer
    x = 31,248.95

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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.