Home / 85,054.40-127,279.20-74,081.60

Finding the Fourth Proportional to 85,054.40, 127,279.20 and 74,081.60

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Solution

The fourth proportional to 85,054.40, 127,279.20 and 74,081.60 is: 110,859.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,054.40 : 127,279.20 = 74,081.60 : x
  2. Step 2: Convert to fraction form
    85,054.40/127,279.20 = 74,081.60/x
  3. Step 3: Cross multiply
    85,054.40x = 127,279.20 × 74,081.60
  4. Step 4: Simplify right side
    85,054.40x = 9,429,046,782.72
  5. Step 5: Solve for x
    x = 9,429,046,782.72/85,054.40
  6. Step 6: Final answer
    x = 110,859.01

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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.