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Finding the Fourth Proportional to 64,267.78, 88,692.93 and 40,385.62

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Solution

The fourth proportional to 64,267.78, 88,692.93 and 40,385.62 is: 55,734.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,267.78 : 88,692.93 = 40,385.62 : x
  2. Step 2: Convert to fraction form
    64,267.78/88,692.93 = 40,385.62/x
  3. Step 3: Cross multiply
    64,267.78x = 88,692.93 × 40,385.62
  4. Step 4: Simplify right side
    64,267.78x = 3,581,918,967.67
  5. Step 5: Solve for x
    x = 3,581,918,967.67/64,267.78
  6. Step 6: Final answer
    x = 55,734.29

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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.