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Finding the Fourth Proportional to 66,745,978.70, 100,118,968.05 and 62,069,297.90

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Solution

The fourth proportional to 66,745,978.70, 100,118,968.05 and 62,069,297.90 is: 93,103,946.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,745,978.70 : 100,118,968.05 = 62,069,297.90 : x
  2. Step 2: Convert to fraction form
    66,745,978.70/100,118,968.05 = 62,069,297.90/x
  3. Step 3: Cross multiply
    66,745,978.70x = 100,118,968.05 × 62,069,297.90
  4. Step 4: Simplify right side
    66,745,978.70x = 6,214,314,053,336,032
  5. Step 5: Solve for x
    x = 6,214,314,053,336,032/66,745,978.70
  6. Step 6: Final answer
    x = 93,103,946.85

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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.