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Finding the Fourth Proportional to 66,407,714.87, 99,407,267.92 and 43,328,955.11

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Solution

The fourth proportional to 66,407,714.87, 99,407,267.92 and 43,328,955.11 is: 64,860,130.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,407,714.87 : 99,407,267.92 = 43,328,955.11 : x
  2. Step 2: Convert to fraction form
    66,407,714.87/99,407,267.92 = 43,328,955.11/x
  3. Step 3: Cross multiply
    66,407,714.87x = 99,407,267.92 × 43,328,955.11
  4. Step 4: Simplify right side
    66,407,714.87x = 4,307,213,049,313,423
  5. Step 5: Solve for x
    x = 4,307,213,049,313,423/66,407,714.87
  6. Step 6: Final answer
    x = 64,860,130.45

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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.