Home / 90,745.12-136,118.42-31,539.27

Finding the Fourth Proportional to 90,745.12, 136,118.42 and 31,539.27

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Solution

The fourth proportional to 90,745.12, 136,118.42 and 31,539.27 is: 47,309.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,745.12 : 136,118.42 = 31,539.27 : x
  2. Step 2: Convert to fraction form
    90,745.12/136,118.42 = 31,539.27/x
  3. Step 3: Cross multiply
    90,745.12x = 136,118.42 × 31,539.27
  4. Step 4: Simplify right side
    90,745.12x = 4,293,076,248.78
  5. Step 5: Solve for x
    x = 4,293,076,248.78/90,745.12
  6. Step 6: Final answer
    x = 47,309.17

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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.