Home / 70,811.19-97,719.44-38,979.86

Finding the Fourth Proportional to 70,811.19, 97,719.44 and 38,979.86

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Solution

The fourth proportional to 70,811.19, 97,719.44 and 38,979.86 is: 53,792.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,811.19 : 97,719.44 = 38,979.86 : x
  2. Step 2: Convert to fraction form
    70,811.19/97,719.44 = 38,979.86/x
  3. Step 3: Cross multiply
    70,811.19x = 97,719.44 × 38,979.86
  4. Step 4: Simplify right side
    70,811.19x = 3,809,089,406.98
  5. Step 5: Solve for x
    x = 3,809,089,406.98/70,811.19
  6. Step 6: Final answer
    x = 53,792.20

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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.