Home / 78,525.60-117,767.64-34,142.28

Finding the Fourth Proportional to 78,525.60, 117,767.64 and 34,142.28

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Solution

The fourth proportional to 78,525.60, 117,767.64 and 34,142.28 is: 51,204.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,525.60 : 117,767.64 = 34,142.28 : x
  2. Step 2: Convert to fraction form
    78,525.60/117,767.64 = 34,142.28/x
  3. Step 3: Cross multiply
    78,525.60x = 117,767.64 × 34,142.28
  4. Step 4: Simplify right side
    78,525.60x = 4,020,855,739.82
  5. Step 5: Solve for x
    x = 4,020,855,739.82/78,525.60
  6. Step 6: Final answer
    x = 51,204.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.