Home / 78,699.26-108,605.06-42,889.30

Finding the Fourth Proportional to 78,699.26, 108,605.06 and 42,889.30

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Solution

The fourth proportional to 78,699.26, 108,605.06 and 42,889.30 is: 59,187.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,699.26 : 108,605.06 = 42,889.30 : x
  2. Step 2: Convert to fraction form
    78,699.26/108,605.06 = 42,889.30/x
  3. Step 3: Cross multiply
    78,699.26x = 108,605.06 × 42,889.30
  4. Step 4: Simplify right side
    78,699.26x = 4,657,994,835.57
  5. Step 5: Solve for x
    x = 4,657,994,835.57/78,699.26
  6. Step 6: Final answer
    x = 59,187.27

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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.