Home / 86,123.24-118,845.84-47,885.36

Finding the Fourth Proportional to 86,123.24, 118,845.84 and 47,885.36

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Solution

The fourth proportional to 86,123.24, 118,845.84 and 47,885.36 is: 66,079.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,123.24 : 118,845.84 = 47,885.36 : x
  2. Step 2: Convert to fraction form
    86,123.24/118,845.84 = 47,885.36/x
  3. Step 3: Cross multiply
    86,123.24x = 118,845.84 × 47,885.36
  4. Step 4: Simplify right side
    86,123.24x = 5,690,975,832.90
  5. Step 5: Solve for x
    x = 5,690,975,832.90/86,123.24
  6. Step 6: Final answer
    x = 66,079.44

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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.