Home / 85,341,811.20-117,777,018.24-48,178,382.64

Finding the Fourth Proportional to 85,341,811.20, 117,777,018.24 and 48,178,382.64

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Solution

The fourth proportional to 85,341,811.20, 117,777,018.24 and 48,178,382.64 is: 66,489,170.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,341,811.20 : 117,777,018.24 = 48,178,382.64 : x
  2. Step 2: Convert to fraction form
    85,341,811.20/117,777,018.24 = 48,178,382.64/x
  3. Step 3: Cross multiply
    85,341,811.20x = 117,777,018.24 × 48,178,382.64
  4. Step 4: Simplify right side
    85,341,811.20x = 5,674,306,250,964,979
  5. Step 5: Solve for x
    x = 5,674,306,250,964,979/85,341,811.20
  6. Step 6: Final answer
    x = 66,489,170.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.