Home / 72,135.60-99,546.56-40,304.16

Finding the Fourth Proportional to 72,135.60, 99,546.56 and 40,304.16

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Solution

The fourth proportional to 72,135.60, 99,546.56 and 40,304.16 is: 55,619.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,135.60 : 99,546.56 = 40,304.16 : x
  2. Step 2: Convert to fraction form
    72,135.60/99,546.56 = 40,304.16/x
  3. Step 3: Cross multiply
    72,135.60x = 99,546.56 × 40,304.16
  4. Step 4: Simplify right side
    72,135.60x = 4,012,140,481.69
  5. Step 5: Solve for x
    x = 4,012,140,481.69/72,135.60
  6. Step 6: Final answer
    x = 55,619.42

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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.