Home / 90,890.77-136,398.43-31,726.43

Finding the Fourth Proportional to 90,890.77, 136,398.43 and 31,726.43

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Solution

The fourth proportional to 90,890.77, 136,398.43 and 31,726.43 is: 47,611.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,890.77 : 136,398.43 = 31,726.43 : x
  2. Step 2: Convert to fraction form
    90,890.77/136,398.43 = 31,726.43/x
  3. Step 3: Cross multiply
    90,890.77x = 136,398.43 × 31,726.43
  4. Step 4: Simplify right side
    90,890.77x = 4,327,435,582.50
  5. Step 5: Solve for x
    x = 4,327,435,582.50/90,890.77
  6. Step 6: Final answer
    x = 47,611.39

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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.