Home / 85,935.72-128,901.60-50,621.06

Finding the Fourth Proportional to 85,935.72, 128,901.60 and 50,621.06

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Solution

The fourth proportional to 85,935.72, 128,901.60 and 50,621.06 is: 75,930.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,935.72 : 128,901.60 = 50,621.06 : x
  2. Step 2: Convert to fraction form
    85,935.72/128,901.60 = 50,621.06/x
  3. Step 3: Cross multiply
    85,935.72x = 128,901.60 × 50,621.06
  4. Step 4: Simplify right side
    85,935.72x = 6,525,135,276.74
  5. Step 5: Solve for x
    x = 6,525,135,276.74/85,935.72
  6. Step 6: Final answer
    x = 75,930.42

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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.