Home / 78,412.26-108,208.49-42,602.30

Finding the Fourth Proportional to 78,412.26, 108,208.49 and 42,602.30

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Solution

The fourth proportional to 78,412.26, 108,208.49 and 42,602.30 is: 58,790.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,412.26 : 108,208.49 = 42,602.30 : x
  2. Step 2: Convert to fraction form
    78,412.26/108,208.49 = 42,602.30/x
  3. Step 3: Cross multiply
    78,412.26x = 108,208.49 × 42,602.30
  4. Step 4: Simplify right side
    78,412.26x = 4,609,930,118.99
  5. Step 5: Solve for x
    x = 4,609,930,118.99/78,412.26
  6. Step 6: Final answer
    x = 58,790.94

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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.