Home / 70,811.11-97,718.29-38,979.19

Finding the Fourth Proportional to 70,811.11, 97,718.29 and 38,979.19

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Solution

The fourth proportional to 70,811.11, 97,718.29 and 38,979.19 is: 53,790.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,811.11 : 97,718.29 = 38,979.19 : x
  2. Step 2: Convert to fraction form
    70,811.11/97,718.29 = 38,979.19/x
  3. Step 3: Cross multiply
    70,811.11x = 97,718.29 × 38,979.19
  4. Step 4: Simplify right side
    70,811.11x = 3,808,979,792.39
  5. Step 5: Solve for x
    x = 3,808,979,792.39/70,811.11
  6. Step 6: Final answer
    x = 53,790.71

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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.