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Finding the Fourth Proportional to 71,994,226.88, 99,351,968.88 and 40,638,875.78

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Solution

The fourth proportional to 71,994,226.88, 99,351,968.88 and 40,638,875.78 is: 56,081,612.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,994,226.88 : 99,351,968.88 = 40,638,875.78 : x
  2. Step 2: Convert to fraction form
    71,994,226.88/99,351,968.88 = 40,638,875.78/x
  3. Step 3: Cross multiply
    71,994,226.88x = 99,351,968.88 × 40,638,875.78
  4. Step 4: Simplify right side
    71,994,226.88x = 4,037,552,321,812,745.50
  5. Step 5: Solve for x
    x = 4,037,552,321,812,745.50/71,994,226.88
  6. Step 6: Final answer
    x = 56,081,612.33

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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.