Home / 78,587.12-108,464.28-50,291.84

Finding the Fourth Proportional to 78,587.12, 108,464.28 and 50,291.84

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Solution

The fourth proportional to 78,587.12, 108,464.28 and 50,291.84 is: 69,411.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,587.12 : 108,464.28 = 50,291.84 : x
  2. Step 2: Convert to fraction form
    78,587.12/108,464.28 = 50,291.84/x
  3. Step 3: Cross multiply
    78,587.12x = 108,464.28 × 50,291.84
  4. Step 4: Simplify right side
    78,587.12x = 5,454,868,215.48
  5. Step 5: Solve for x
    x = 5,454,868,215.48/78,587.12
  6. Step 6: Final answer
    x = 69,411.73

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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.