Home / 90,830.60-136,238.90-40,245.29

Finding the Fourth Proportional to 90,830.60, 136,238.90 and 40,245.29

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Solution

The fourth proportional to 90,830.60, 136,238.90 and 40,245.29 is: 60,364.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,830.60 : 136,238.90 = 40,245.29 : x
  2. Step 2: Convert to fraction form
    90,830.60/136,238.90 = 40,245.29/x
  3. Step 3: Cross multiply
    90,830.60x = 136,238.90 × 40,245.29
  4. Step 4: Simplify right side
    90,830.60x = 5,482,973,157.36
  5. Step 5: Solve for x
    x = 5,482,973,157.36/90,830.60
  6. Step 6: Final answer
    x = 60,364.83

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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.