Home / 85,983.02-128,930.66-50,513.64

Finding the Fourth Proportional to 85,983.02, 128,930.66 and 50,513.64

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Solution

The fourth proportional to 85,983.02, 128,930.66 and 50,513.64 is: 75,744.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,983.02 : 128,930.66 = 50,513.64 : x
  2. Step 2: Convert to fraction form
    85,983.02/128,930.66 = 50,513.64/x
  3. Step 3: Cross multiply
    85,983.02x = 128,930.66 × 50,513.64
  4. Step 4: Simplify right side
    85,983.02x = 6,512,756,691.63
  5. Step 5: Solve for x
    x = 6,512,756,691.63/85,983.02
  6. Step 6: Final answer
    x = 75,744.69

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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.