Home / 57,887,778.40-79,885,291.38-31,783,987

Finding the Fourth Proportional to 57,887,778.40, 79,885,291.38 and 31,783,987

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Solution

The fourth proportional to 57,887,778.40, 79,885,291.38 and 31,783,987 is: 43,861,988.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,887,778.40 : 79,885,291.38 = 31,783,987 : x
  2. Step 2: Convert to fraction form
    57,887,778.40/79,885,291.38 = 31,783,987/x
  3. Step 3: Cross multiply
    57,887,778.40x = 79,885,291.38 × 31,783,987
  4. Step 4: Simplify right side
    57,887,778.40x = 2,539,073,062,713,132
  5. Step 5: Solve for x
    x = 2,539,073,062,713,132/57,887,778.40
  6. Step 6: Final answer
    x = 43,861,988.37

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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.