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Finding the Fourth Proportional to 78,858.09, 108,814.59 and 44,870.90

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Solution

The fourth proportional to 78,858.09, 108,814.59 and 44,870.90 is: 61,916.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,858.09 : 108,814.59 = 44,870.90 : x
  2. Step 2: Convert to fraction form
    78,858.09/108,814.59 = 44,870.90/x
  3. Step 3: Cross multiply
    78,858.09x = 108,814.59 × 44,870.90
  4. Step 4: Simplify right side
    78,858.09x = 4,882,608,042.36
  5. Step 5: Solve for x
    x = 4,882,608,042.36/78,858.09
  6. Step 6: Final answer
    x = 61,916.39

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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.