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Finding the Fourth Proportional to 66,432,051.80, 99,648,077.70 and 60,479,912.60

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Solution

The fourth proportional to 66,432,051.80, 99,648,077.70 and 60,479,912.60 is: 90,719,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,432,051.80 : 99,648,077.70 = 60,479,912.60 : x
  2. Step 2: Convert to fraction form
    66,432,051.80/99,648,077.70 = 60,479,912.60/x
  3. Step 3: Cross multiply
    66,432,051.80x = 99,648,077.70 × 60,479,912.60
  4. Step 4: Simplify right side
    66,432,051.80x = 6,026,707,030,054,009
  5. Step 5: Solve for x
    x = 6,026,707,030,054,009/66,432,051.80
  6. Step 6: Final answer
    x = 90,719,868.90

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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.