Home / 85,686.22-128,551.51-50,177.55

Finding the Fourth Proportional to 85,686.22, 128,551.51 and 50,177.55

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Solution

The fourth proportional to 85,686.22, 128,551.51 and 50,177.55 is: 75,279.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,686.22 : 128,551.51 = 50,177.55 : x
  2. Step 2: Convert to fraction form
    85,686.22/128,551.51 = 50,177.55/x
  3. Step 3: Cross multiply
    85,686.22x = 128,551.51 × 50,177.55
  4. Step 4: Simplify right side
    85,686.22x = 6,450,399,820.60
  5. Step 5: Solve for x
    x = 6,450,399,820.60/85,686.22
  6. Step 6: Final answer
    x = 75,279.31

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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.