Home / 78,167.28-117,265.48-25,579.64

Finding the Fourth Proportional to 78,167.28, 117,265.48 and 25,579.64

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Solution

The fourth proportional to 78,167.28, 117,265.48 and 25,579.64 is: 38,374.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,167.28 : 117,265.48 = 25,579.64 : x
  2. Step 2: Convert to fraction form
    78,167.28/117,265.48 = 25,579.64/x
  3. Step 3: Cross multiply
    78,167.28x = 117,265.48 × 25,579.64
  4. Step 4: Simplify right side
    78,167.28x = 2,999,608,762.83
  5. Step 5: Solve for x
    x = 2,999,608,762.83/78,167.28
  6. Step 6: Final answer
    x = 38,374.22

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1.5x scale

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.