Home / 48,543.13-66,976.41-28,405

Finding the Fourth Proportional to 48,543.13, 66,976.41 and 28,405

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Solution

The fourth proportional to 48,543.13, 66,976.41 and 28,405 is: 39,191.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,543.13 : 66,976.41 = 28,405 : x
  2. Step 2: Convert to fraction form
    48,543.13/66,976.41 = 28,405/x
  3. Step 3: Cross multiply
    48,543.13x = 66,976.41 × 28,405
  4. Step 4: Simplify right side
    48,543.13x = 1,902,464,926.05
  5. Step 5: Solve for x
    x = 1,902,464,926.05/48,543.13
  6. Step 6: Final answer
    x = 39,191.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.