Home / 87,045.48-130,393.26-45,405

Finding the Fourth Proportional to 87,045.48, 130,393.26 and 45,405

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Solution

The fourth proportional to 87,045.48, 130,393.26 and 45,405 is: 68,016.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,045.48 : 130,393.26 = 45,405 : x
  2. Step 2: Convert to fraction form
    87,045.48/130,393.26 = 45,405/x
  3. Step 3: Cross multiply
    87,045.48x = 130,393.26 × 45,405
  4. Step 4: Simplify right side
    87,045.48x = 5,920,505,970.30
  5. Step 5: Solve for x
    x = 5,920,505,970.30/87,045.48
  6. Step 6: Final answer
    x = 68,016.24

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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.