Home / 75,412.68-113,133.59-28,661.91

Finding the Fourth Proportional to 75,412.68, 113,133.59 and 28,661.91

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Solution

The fourth proportional to 75,412.68, 113,133.59 and 28,661.91 is: 42,998.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,412.68 : 113,133.59 = 28,661.91 : x
  2. Step 2: Convert to fraction form
    75,412.68/113,133.59 = 28,661.91/x
  3. Step 3: Cross multiply
    75,412.68x = 113,133.59 × 28,661.91
  4. Step 4: Simplify right side
    75,412.68x = 3,242,624,774.56
  5. Step 5: Solve for x
    x = 3,242,624,774.56/75,412.68
  6. Step 6: Final answer
    x = 42,998.40

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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.