Home / 75,409.76-113,012.58-28,637.12

Finding the Fourth Proportional to 75,409.76, 113,012.58 and 28,637.12

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Solution

The fourth proportional to 75,409.76, 113,012.58 and 28,637.12 is: 42,916.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,409.76 : 113,012.58 = 28,637.12 : x
  2. Step 2: Convert to fraction form
    75,409.76/113,012.58 = 28,637.12/x
  3. Step 3: Cross multiply
    75,409.76x = 113,012.58 × 28,637.12
  4. Step 4: Simplify right side
    75,409.76x = 3,236,354,814.97
  5. Step 5: Solve for x
    x = 3,236,354,814.97/75,409.76
  6. Step 6: Final answer
    x = 42,916.92

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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.