Home / 90,390.10-135,592.08-30,418.87

Finding the Fourth Proportional to 90,390.10, 135,592.08 and 30,418.87

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Solution

The fourth proportional to 90,390.10, 135,592.08 and 30,418.87 is: 45,630.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,390.10 : 135,592.08 = 30,418.87 : x
  2. Step 2: Convert to fraction form
    90,390.10/135,592.08 = 30,418.87/x
  3. Step 3: Cross multiply
    90,390.10x = 135,592.08 × 30,418.87
  4. Step 4: Simplify right side
    90,390.10x = 4,124,557,854.55
  5. Step 5: Solve for x
    x = 4,124,557,854.55/90,390.10
  6. Step 6: Final answer
    x = 45,630.64

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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.