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Finding the Fourth Proportional to 70,692.13, 97,555.15 and 40,487.47

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Solution

The fourth proportional to 70,692.13, 97,555.15 and 40,487.47 is: 55,872.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,692.13 : 97,555.15 = 40,487.47 : x
  2. Step 2: Convert to fraction form
    70,692.13/97,555.15 = 40,487.47/x
  3. Step 3: Cross multiply
    70,692.13x = 97,555.15 × 40,487.47
  4. Step 4: Simplify right side
    70,692.13x = 3,949,761,208.97
  5. Step 5: Solve for x
    x = 3,949,761,208.97/70,692.13
  6. Step 6: Final answer
    x = 55,872.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.