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Finding the Fourth Proportional to 65,220.98, 97,744.68 and 42,703.11

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Solution

The fourth proportional to 65,220.98, 97,744.68 and 42,703.11 is: 63,997.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,220.98 : 97,744.68 = 42,703.11 : x
  2. Step 2: Convert to fraction form
    65,220.98/97,744.68 = 42,703.11/x
  3. Step 3: Cross multiply
    65,220.98x = 97,744.68 × 42,703.11
  4. Step 4: Simplify right side
    65,220.98x = 4,174,001,821.95
  5. Step 5: Solve for x
    x = 4,174,001,821.95/65,220.98
  6. Step 6: Final answer
    x = 63,997.84

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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.