Home / 71,322,652.36-98,428,082.40-39,960,971.88

Finding the Fourth Proportional to 71,322,652.36, 98,428,082.40 and 39,960,971.88

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Solution

The fourth proportional to 71,322,652.36, 98,428,082.40 and 39,960,971.88 is: 55,147,722.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,322,652.36 : 98,428,082.40 = 39,960,971.88 : x
  2. Step 2: Convert to fraction form
    71,322,652.36/98,428,082.40 = 39,960,971.88/x
  3. Step 3: Cross multiply
    71,322,652.36x = 98,428,082.40 × 39,960,971.88
  4. Step 4: Simplify right side
    71,322,652.36x = 3,933,281,832,988,723.50
  5. Step 5: Solve for x
    x = 3,933,281,832,988,723.50/71,322,652.36
  6. Step 6: Final answer
    x = 55,147,722.40

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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.