Home / 78,986.16-108,983.34-45,452.16

Finding the Fourth Proportional to 78,986.16, 108,983.34 and 45,452.16

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Solution

The fourth proportional to 78,986.16, 108,983.34 and 45,452.16 is: 62,713.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,986.16 : 108,983.34 = 45,452.16 : x
  2. Step 2: Convert to fraction form
    78,986.16/108,983.34 = 45,452.16/x
  3. Step 3: Cross multiply
    78,986.16x = 108,983.34 × 45,452.16
  4. Step 4: Simplify right side
    78,986.16x = 4,953,528,207.01
  5. Step 5: Solve for x
    x = 4,953,528,207.01/78,986.16
  6. Step 6: Final answer
    x = 62,713.88

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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.