Home / 78,625.23-108,502.94-42,815.39

Finding the Fourth Proportional to 78,625.23, 108,502.94 and 42,815.39

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Solution

The fourth proportional to 78,625.23, 108,502.94 and 42,815.39 is: 59,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,625.23 : 108,502.94 = 42,815.39 : x
  2. Step 2: Convert to fraction form
    78,625.23/108,502.94 = 42,815.39/x
  3. Step 3: Cross multiply
    78,625.23x = 108,502.94 × 42,815.39
  4. Step 4: Simplify right side
    78,625.23x = 4,645,595,256.77
  5. Step 5: Solve for x
    x = 4,645,595,256.77/78,625.23
  6. Step 6: Final answer
    x = 59,085.30

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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.