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Finding the Fourth Proportional to 66,173,781.60, 99,260,672.40 and 50,868,280.80

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Solution

The fourth proportional to 66,173,781.60, 99,260,672.40 and 50,868,280.80 is: 76,302,421.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,173,781.60 : 99,260,672.40 = 50,868,280.80 : x
  2. Step 2: Convert to fraction form
    66,173,781.60/99,260,672.40 = 50,868,280.80/x
  3. Step 3: Cross multiply
    66,173,781.60x = 99,260,672.40 × 50,868,280.80
  4. Step 4: Simplify right side
    66,173,781.60x = 5,049,219,756,040,010
  5. Step 5: Solve for x
    x = 5,049,219,756,040,010/66,173,781.60
  6. Step 6: Final answer
    x = 76,302,421.20

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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.