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Finding the Fourth Proportional to 55,999.70, 83,999.55 and 36,170.90

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Solution

The fourth proportional to 55,999.70, 83,999.55 and 36,170.90 is: 54,256.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,999.70 : 83,999.55 = 36,170.90 : x
  2. Step 2: Convert to fraction form
    55,999.70/83,999.55 = 36,170.90/x
  3. Step 3: Cross multiply
    55,999.70x = 83,999.55 × 36,170.90
  4. Step 4: Simplify right side
    55,999.70x = 3,038,339,323.10
  5. Step 5: Solve for x
    x = 3,038,339,323.10/55,999.70
  6. Step 6: Final answer
    x = 54,256.35

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1.5x scale

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.