Home / 78,448.16-108,257.64-58,394.72

Finding the Fourth Proportional to 78,448.16, 108,257.64 and 58,394.72

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Solution

The fourth proportional to 78,448.16, 108,257.64 and 58,394.72 is: 80,584.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,448.16 : 108,257.64 = 58,394.72 : x
  2. Step 2: Convert to fraction form
    78,448.16/108,257.64 = 58,394.72/x
  3. Step 3: Cross multiply
    78,448.16x = 108,257.64 × 58,394.72
  4. Step 4: Simplify right side
    78,448.16x = 6,321,674,575.66
  5. Step 5: Solve for x
    x = 6,321,674,575.66/78,448.16
  6. Step 6: Final answer
    x = 80,584.10

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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.