Home / 88,867.43-121,984.26-78,570.30

Finding the Fourth Proportional to 88,867.43, 121,984.26 and 78,570.30

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Solution

The fourth proportional to 88,867.43, 121,984.26 and 78,570.30 is: 107,849.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,867.43 : 121,984.26 = 78,570.30 : x
  2. Step 2: Convert to fraction form
    88,867.43/121,984.26 = 78,570.30/x
  3. Step 3: Cross multiply
    88,867.43x = 121,984.26 × 78,570.30
  4. Step 4: Simplify right side
    88,867.43x = 9,584,339,510.63
  5. Step 5: Solve for x
    x = 9,584,339,510.63/88,867.43
  6. Step 6: Final answer
    x = 107,849.86

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.