Home / 89,128.86-122,986.14-53,305.80

Finding the Fourth Proportional to 89,128.86, 122,986.14 and 53,305.80

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Solution

The fourth proportional to 89,128.86, 122,986.14 and 53,305.80 is: 73,555.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,128.86 : 122,986.14 = 53,305.80 : x
  2. Step 2: Convert to fraction form
    89,128.86/122,986.14 = 53,305.80/x
  3. Step 3: Cross multiply
    89,128.86x = 122,986.14 × 53,305.80
  4. Step 4: Simplify right side
    89,128.86x = 6,555,874,581.61
  5. Step 5: Solve for x
    x = 6,555,874,581.61/89,128.86
  6. Step 6: Final answer
    x = 73,555.01

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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.