Home / 78,859.14-108,809.37-45,318.66

Finding the Fourth Proportional to 78,859.14, 108,809.37 and 45,318.66

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Solution

The fourth proportional to 78,859.14, 108,809.37 and 45,318.66 is: 62,530.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,859.14 : 108,809.37 = 45,318.66 : x
  2. Step 2: Convert to fraction form
    78,859.14/108,809.37 = 45,318.66/x
  3. Step 3: Cross multiply
    78,859.14x = 108,809.37 × 45,318.66
  4. Step 4: Simplify right side
    78,859.14x = 4,931,094,843.84
  5. Step 5: Solve for x
    x = 4,931,094,843.84/78,859.14
  6. Step 6: Final answer
    x = 62,530.42

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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.