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Finding the Fourth Proportional to 85,580.55, 118,061.38 and 55,375.61

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Solution

The fourth proportional to 85,580.55, 118,061.38 and 55,375.61 is: 76,392.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,580.55 : 118,061.38 = 55,375.61 : x
  2. Step 2: Convert to fraction form
    85,580.55/118,061.38 = 55,375.61/x
  3. Step 3: Cross multiply
    85,580.55x = 118,061.38 × 55,375.61
  4. Step 4: Simplify right side
    85,580.55x = 6,537,720,934.94
  5. Step 5: Solve for x
    x = 6,537,720,934.94/85,580.55
  6. Step 6: Final answer
    x = 76,392.60

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1.5x scale

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.