Home / 90,815.76-136,245.51-28,486.26

Finding the Fourth Proportional to 90,815.76, 136,245.51 and 28,486.26

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Solution

The fourth proportional to 90,815.76, 136,245.51 and 28,486.26 is: 42,736.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,815.76 : 136,245.51 = 28,486.26 : x
  2. Step 2: Convert to fraction form
    90,815.76/136,245.51 = 28,486.26/x
  3. Step 3: Cross multiply
    90,815.76x = 136,245.51 × 28,486.26
  4. Step 4: Simplify right side
    90,815.76x = 3,881,125,021.69
  5. Step 5: Solve for x
    x = 3,881,125,021.69/90,815.76
  6. Step 6: Final answer
    x = 42,736.25

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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.