Home / 75,829.20-113,837.40-47,749.20

Finding the Fourth Proportional to 75,829.20, 113,837.40 and 47,749.20

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Solution

The fourth proportional to 75,829.20, 113,837.40 and 47,749.20 is: 71,682.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,829.20 : 113,837.40 = 47,749.20 : x
  2. Step 2: Convert to fraction form
    75,829.20/113,837.40 = 47,749.20/x
  3. Step 3: Cross multiply
    75,829.20x = 113,837.40 × 47,749.20
  4. Step 4: Simplify right side
    75,829.20x = 5,435,644,780.08
  5. Step 5: Solve for x
    x = 5,435,644,780.08/75,829.20
  6. Step 6: Final answer
    x = 71,682.74

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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.