Home / 78,239.12-117,300.36-47,067.08

Finding the Fourth Proportional to 78,239.12, 117,300.36 and 47,067.08

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Solution

The fourth proportional to 78,239.12, 117,300.36 and 47,067.08 is: 70,565.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,239.12 : 117,300.36 = 47,067.08 : x
  2. Step 2: Convert to fraction form
    78,239.12/117,300.36 = 47,067.08/x
  3. Step 3: Cross multiply
    78,239.12x = 117,300.36 × 47,067.08
  4. Step 4: Simplify right side
    78,239.12x = 5,520,985,428.15
  5. Step 5: Solve for x
    x = 5,520,985,428.15/78,239.12
  6. Step 6: Final answer
    x = 70,565.54

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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.