Home / 78,385.37-108,172.62-42,576.08

Finding the Fourth Proportional to 78,385.37, 108,172.62 and 42,576.08

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Solution

The fourth proportional to 78,385.37, 108,172.62 and 42,576.08 is: 58,755.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,385.37 : 108,172.62 = 42,576.08 : x
  2. Step 2: Convert to fraction form
    78,385.37/108,172.62 = 42,576.08/x
  3. Step 3: Cross multiply
    78,385.37x = 108,172.62 × 42,576.08
  4. Step 4: Simplify right side
    78,385.37x = 4,605,565,582.07
  5. Step 5: Solve for x
    x = 4,605,565,582.07/78,385.37
  6. Step 6: Final answer
    x = 58,755.43

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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.