Home / 78,057.47-117,098.39-25,454.72

Finding the Fourth Proportional to 78,057.47, 117,098.39 and 25,454.72

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Solution

The fourth proportional to 78,057.47, 117,098.39 and 25,454.72 is: 38,186.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,057.47 : 117,098.39 = 25,454.72 : x
  2. Step 2: Convert to fraction form
    78,057.47/117,098.39 = 25,454.72/x
  3. Step 3: Cross multiply
    78,057.47x = 117,098.39 × 25,454.72
  4. Step 4: Simplify right side
    78,057.47x = 2,980,706,208.05
  5. Step 5: Solve for x
    x = 2,980,706,208.05/78,057.47
  6. Step 6: Final answer
    x = 38,186.05

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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.