Home / 78,336.14-108,104.09-42,526.31

Finding the Fourth Proportional to 78,336.14, 108,104.09 and 42,526.31

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Solution

The fourth proportional to 78,336.14, 108,104.09 and 42,526.31 is: 58,686.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,336.14 : 108,104.09 = 42,526.31 : x
  2. Step 2: Convert to fraction form
    78,336.14/108,104.09 = 42,526.31/x
  3. Step 3: Cross multiply
    78,336.14x = 108,104.09 × 42,526.31
  4. Step 4: Simplify right side
    78,336.14x = 4,597,267,290.46
  5. Step 5: Solve for x
    x = 4,597,267,290.46/78,336.14
  6. Step 6: Final answer
    x = 58,686.42

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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.