Home / 90,869.94-136,326.47-28,540.44

Finding the Fourth Proportional to 90,869.94, 136,326.47 and 28,540.44

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Solution

The fourth proportional to 90,869.94, 136,326.47 and 28,540.44 is: 42,817.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,869.94 : 136,326.47 = 28,540.44 : x
  2. Step 2: Convert to fraction form
    90,869.94/136,326.47 = 28,540.44/x
  3. Step 3: Cross multiply
    90,869.94x = 136,326.47 × 28,540.44
  4. Step 4: Simplify right side
    90,869.94x = 3,890,817,294.74
  5. Step 5: Solve for x
    x = 3,890,817,294.74/90,869.94
  6. Step 6: Final answer
    x = 42,817.43

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1.5x scale

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.