Home / 87,117.93-120,272.04-66,661.65

Finding the Fourth Proportional to 87,117.93, 120,272.04 and 66,661.65

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Solution

The fourth proportional to 87,117.93, 120,272.04 and 66,661.65 is: 92,030.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,117.93 : 120,272.04 = 66,661.65 : x
  2. Step 2: Convert to fraction form
    87,117.93/120,272.04 = 66,661.65/x
  3. Step 3: Cross multiply
    87,117.93x = 120,272.04 × 66,661.65
  4. Step 4: Simplify right side
    87,117.93x = 8,017,532,635.27
  5. Step 5: Solve for x
    x = 8,017,532,635.27/87,117.93
  6. Step 6: Final answer
    x = 92,030.80

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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.