Home / 90,647,987.76-136,024,739.34-38,121,885.36

Finding the Fourth Proportional to 90,647,987.76, 136,024,739.34 and 38,121,885.36

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Solution

The fourth proportional to 90,647,987.76, 136,024,739.34 and 38,121,885.36 is: 57,205,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,647,987.76 : 136,024,739.34 = 38,121,885.36 : x
  2. Step 2: Convert to fraction form
    90,647,987.76/136,024,739.34 = 38,121,885.36/x
  3. Step 3: Cross multiply
    90,647,987.76x = 136,024,739.34 × 38,121,885.36
  4. Step 4: Simplify right side
    90,647,987.76x = 5,185,519,519,243,362
  5. Step 5: Solve for x
    x = 5,185,519,519,243,362/90,647,987.76
  6. Step 6: Final answer
    x = 57,205,015.22

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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.