Home / 75,720.56-113,508.51-28,322.80

Finding the Fourth Proportional to 75,720.56, 113,508.51 and 28,322.80

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Solution

The fourth proportional to 75,720.56, 113,508.51 and 28,322.80 is: 42,457.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,720.56 : 113,508.51 = 28,322.80 : x
  2. Step 2: Convert to fraction form
    75,720.56/113,508.51 = 28,322.80/x
  3. Step 3: Cross multiply
    75,720.56x = 113,508.51 × 28,322.80
  4. Step 4: Simplify right side
    75,720.56x = 3,214,879,181.61
  5. Step 5: Solve for x
    x = 3,214,879,181.61/75,720.56
  6. Step 6: Final answer
    x = 42,457.15

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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.