Home / 78,883.31-108,863.40-43,076.65

Finding the Fourth Proportional to 78,883.31, 108,863.40 and 43,076.65

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Solution

The fourth proportional to 78,883.31, 108,863.40 and 43,076.65 is: 59,448.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,883.31 : 108,863.40 = 43,076.65 : x
  2. Step 2: Convert to fraction form
    78,883.31/108,863.40 = 43,076.65/x
  3. Step 3: Cross multiply
    78,883.31x = 108,863.40 × 43,076.65
  4. Step 4: Simplify right side
    78,883.31x = 4,689,470,364.23
  5. Step 5: Solve for x
    x = 4,689,470,364.23/78,883.31
  6. Step 6: Final answer
    x = 59,448.19

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1.5x scale

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.