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Finding the Fourth Proportional to 85,393.36, 128,103.81 and 32,089.49

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Solution

The fourth proportional to 85,393.36, 128,103.81 and 32,089.49 is: 48,139.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,393.36 : 128,103.81 = 32,089.49 : x
  2. Step 2: Convert to fraction form
    85,393.36/128,103.81 = 32,089.49/x
  3. Step 3: Cross multiply
    85,393.36x = 128,103.81 × 32,089.49
  4. Step 4: Simplify right side
    85,393.36x = 4,110,785,929.96
  5. Step 5: Solve for x
    x = 4,110,785,929.96/85,393.36
  6. Step 6: Final answer
    x = 48,139.41

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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.