Home / 78,867.36-118,167.38-47,637

Finding the Fourth Proportional to 78,867.36, 118,167.38 and 47,637

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Solution

The fourth proportional to 78,867.36, 118,167.38 and 47,637 is: 71,374.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,867.36 : 118,167.38 = 47,637 : x
  2. Step 2: Convert to fraction form
    78,867.36/118,167.38 = 47,637/x
  3. Step 3: Cross multiply
    78,867.36x = 118,167.38 × 47,637
  4. Step 4: Simplify right side
    78,867.36x = 5,629,139,481.06
  5. Step 5: Solve for x
    x = 5,629,139,481.06/78,867.36
  6. Step 6: Final answer
    x = 71,374.77

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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.