Home / 78,530.38-117,833.37-39,090.94

Finding the Fourth Proportional to 78,530.38, 117,833.37 and 39,090.94

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Solution

The fourth proportional to 78,530.38, 117,833.37 and 39,090.94 is: 58,655.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,530.38 : 117,833.37 = 39,090.94 : x
  2. Step 2: Convert to fraction form
    78,530.38/117,833.37 = 39,090.94/x
  3. Step 3: Cross multiply
    78,530.38x = 117,833.37 × 39,090.94
  4. Step 4: Simplify right side
    78,530.38x = 4,606,216,412.05
  5. Step 5: Solve for x
    x = 4,606,216,412.05/78,530.38
  6. Step 6: Final answer
    x = 58,655.22

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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.