Home / 78,775.20-108,712.62-44,789.40

Finding the Fourth Proportional to 78,775.20, 108,712.62 and 44,789.40

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Solution

The fourth proportional to 78,775.20, 108,712.62 and 44,789.40 is: 61,810.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,775.20 : 108,712.62 = 44,789.40 : x
  2. Step 2: Convert to fraction form
    78,775.20/108,712.62 = 44,789.40/x
  3. Step 3: Cross multiply
    78,775.20x = 108,712.62 × 44,789.40
  4. Step 4: Simplify right side
    78,775.20x = 4,869,173,022.23
  5. Step 5: Solve for x
    x = 4,869,173,022.23/78,775.20
  6. Step 6: Final answer
    x = 61,810.99

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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.