Home / 90,804.21-125,311.55-53,100.33

Finding the Fourth Proportional to 90,804.21, 125,311.55 and 53,100.33

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Solution

The fourth proportional to 90,804.21, 125,311.55 and 53,100.33 is: 73,279.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,804.21 : 125,311.55 = 53,100.33 : x
  2. Step 2: Convert to fraction form
    90,804.21/125,311.55 = 53,100.33/x
  3. Step 3: Cross multiply
    90,804.21x = 125,311.55 × 53,100.33
  4. Step 4: Simplify right side
    90,804.21x = 6,654,084,657.81
  5. Step 5: Solve for x
    x = 6,654,084,657.81/90,804.21
  6. Step 6: Final answer
    x = 73,279.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.