Home / 78,201.42-117,290.25-25,609.74

Finding the Fourth Proportional to 78,201.42, 117,290.25 and 25,609.74

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Solution

The fourth proportional to 78,201.42, 117,290.25 and 25,609.74 is: 38,410.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,201.42 : 117,290.25 = 25,609.74 : x
  2. Step 2: Convert to fraction form
    78,201.42/117,290.25 = 25,609.74/x
  3. Step 3: Cross multiply
    78,201.42x = 117,290.25 × 25,609.74
  4. Step 4: Simplify right side
    78,201.42x = 3,003,772,807.04
  5. Step 5: Solve for x
    x = 3,003,772,807.04/78,201.42
  6. Step 6: Final answer
    x = 38,410.72

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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.