Home / 87,212.20-130,559.10-57,663.40

Finding the Fourth Proportional to 87,212.20, 130,559.10 and 57,663.40

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Solution

The fourth proportional to 87,212.20, 130,559.10 and 57,663.40 is: 86,323.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,212.20 : 130,559.10 = 57,663.40 : x
  2. Step 2: Convert to fraction form
    87,212.20/130,559.10 = 57,663.40/x
  3. Step 3: Cross multiply
    87,212.20x = 130,559.10 × 57,663.40
  4. Step 4: Simplify right side
    87,212.20x = 7,528,481,606.94
  5. Step 5: Solve for x
    x = 7,528,481,606.94/87,212.20
  6. Step 6: Final answer
    x = 86,323.72

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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.