Home / 75,636.40-113,421.12-28,856.56

Finding the Fourth Proportional to 75,636.40, 113,421.12 and 28,856.56

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Solution

The fourth proportional to 75,636.40, 113,421.12 and 28,856.56 is: 43,272.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,636.40 : 113,421.12 = 28,856.56 : x
  2. Step 2: Convert to fraction form
    75,636.40/113,421.12 = 28,856.56/x
  3. Step 3: Cross multiply
    75,636.40x = 113,421.12 × 28,856.56
  4. Step 4: Simplify right side
    75,636.40x = 3,272,943,354.55
  5. Step 5: Solve for x
    x = 3,272,943,354.55/75,636.40
  6. Step 6: Final answer
    x = 43,272.07

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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.