Home / 78,712.14-108,622.80-44,720.69

Finding the Fourth Proportional to 78,712.14, 108,622.80 and 44,720.69

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Solution

The fourth proportional to 78,712.14, 108,622.80 and 44,720.69 is: 61,714.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,712.14 : 108,622.80 = 44,720.69 : x
  2. Step 2: Convert to fraction form
    78,712.14/108,622.80 = 44,720.69/x
  3. Step 3: Cross multiply
    78,712.14x = 108,622.80 × 44,720.69
  4. Step 4: Simplify right side
    78,712.14x = 4,857,686,565.73
  5. Step 5: Solve for x
    x = 4,857,686,565.73/78,712.14
  6. Step 6: Final answer
    x = 61,714.58

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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.