Home / 78,169,467.70-117,254,201.55-65,628,334.90

Finding the Fourth Proportional to 78,169,467.70, 117,254,201.55 and 65,628,334.90

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Solution

The fourth proportional to 78,169,467.70, 117,254,201.55 and 65,628,334.90 is: 98,442,502.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,169,467.70 : 117,254,201.55 = 65,628,334.90 : x
  2. Step 2: Convert to fraction form
    78,169,467.70/117,254,201.55 = 65,628,334.90/x
  3. Step 3: Cross multiply
    78,169,467.70x = 117,254,201.55 × 65,628,334.90
  4. Step 4: Simplify right side
    78,169,467.70x = 7,695,198,007,755,499
  5. Step 5: Solve for x
    x = 7,695,198,007,755,499/78,169,467.70
  6. Step 6: Final answer
    x = 98,442,502.35

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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.