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Finding the Fourth Proportional to 66,068,049.60, 99,102,074.40 and 64,934,308.80

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Solution

The fourth proportional to 66,068,049.60, 99,102,074.40 and 64,934,308.80 is: 97,401,463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,068,049.60 : 99,102,074.40 = 64,934,308.80 : x
  2. Step 2: Convert to fraction form
    66,068,049.60/99,102,074.40 = 64,934,308.80/x
  3. Step 3: Cross multiply
    66,068,049.60x = 99,102,074.40 × 64,934,308.80
  4. Step 4: Simplify right side
    66,068,049.60x = 6,435,124,701,810,175
  5. Step 5: Solve for x
    x = 6,435,124,701,810,175/66,068,049.60
  6. Step 6: Final answer
    x = 97,401,463.20

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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.