Home / 30,387.18-45,582.39-28,725.06

Finding the Fourth Proportional to 30,387.18, 45,582.39 and 28,725.06

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Solution

The fourth proportional to 30,387.18, 45,582.39 and 28,725.06 is: 43,089.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,387.18 : 45,582.39 = 28,725.06 : x
  2. Step 2: Convert to fraction form
    30,387.18/45,582.39 = 28,725.06/x
  3. Step 3: Cross multiply
    30,387.18x = 45,582.39 × 28,725.06
  4. Step 4: Simplify right side
    30,387.18x = 1,309,356,887.69
  5. Step 5: Solve for x
    x = 1,309,356,887.69/30,387.18
  6. Step 6: Final answer
    x = 43,089.12

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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.