Home / 80,876,038.40-121,314,057.60-66,515,321.60

Finding the Fourth Proportional to 80,876,038.40, 121,314,057.60 and 66,515,321.60

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Solution

The fourth proportional to 80,876,038.40, 121,314,057.60 and 66,515,321.60 is: 99,772,982.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,876,038.40 : 121,314,057.60 = 66,515,321.60 : x
  2. Step 2: Convert to fraction form
    80,876,038.40/121,314,057.60 = 66,515,321.60/x
  3. Step 3: Cross multiply
    80,876,038.40x = 121,314,057.60 × 66,515,321.60
  4. Step 4: Simplify right side
    80,876,038.40x = 8,069,243,555,864,924
  5. Step 5: Solve for x
    x = 8,069,243,555,864,924/80,876,038.40
  6. Step 6: Final answer
    x = 99,772,982.40

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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.