Home / 90,815.80-136,245.48-28,486.28

Finding the Fourth Proportional to 90,815.80, 136,245.48 and 28,486.28

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Solution

The fourth proportional to 90,815.80, 136,245.48 and 28,486.28 is: 42,736.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,815.80 : 136,245.48 = 28,486.28 : x
  2. Step 2: Convert to fraction form
    90,815.80/136,245.48 = 28,486.28/x
  3. Step 3: Cross multiply
    90,815.80x = 136,245.48 × 28,486.28
  4. Step 4: Simplify right side
    90,815.80x = 3,881,126,892.01
  5. Step 5: Solve for x
    x = 3,881,126,892.01/90,815.80
  6. Step 6: Final answer
    x = 42,736.25

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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.