Home / 85,432.05-128,123.87-35,450.33

Finding the Fourth Proportional to 85,432.05, 128,123.87 and 35,450.33

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Solution

The fourth proportional to 85,432.05, 128,123.87 and 35,450.33 is: 53,165.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,432.05 : 128,123.87 = 35,450.33 : x
  2. Step 2: Convert to fraction form
    85,432.05/128,123.87 = 35,450.33/x
  3. Step 3: Cross multiply
    85,432.05x = 128,123.87 × 35,450.33
  4. Step 4: Simplify right side
    85,432.05x = 4,542,032,654.51
  5. Step 5: Solve for x
    x = 4,542,032,654.51/85,432.05
  6. Step 6: Final answer
    x = 53,165.44

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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.