Home / 78,011.33-117,082.64-73,090.58

Finding the Fourth Proportional to 78,011.33, 117,082.64 and 73,090.58

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Solution

The fourth proportional to 78,011.33, 117,082.64 and 73,090.58 is: 109,697.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,011.33 : 117,082.64 = 73,090.58 : x
  2. Step 2: Convert to fraction form
    78,011.33/117,082.64 = 73,090.58/x
  3. Step 3: Cross multiply
    78,011.33x = 117,082.64 × 73,090.58
  4. Step 4: Simplify right side
    78,011.33x = 8,557,637,662.84
  5. Step 5: Solve for x
    x = 8,557,637,662.84/78,011.33
  6. Step 6: Final answer
    x = 109,697.38

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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.