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Finding the Fourth Proportional to 85,863.47, 128,832.29 and 46,448.33

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Solution

The fourth proportional to 85,863.47, 128,832.29 and 46,448.33 is: 69,692.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,863.47 : 128,832.29 = 46,448.33 : x
  2. Step 2: Convert to fraction form
    85,863.47/128,832.29 = 46,448.33/x
  3. Step 3: Cross multiply
    85,863.47x = 128,832.29 × 46,448.33
  4. Step 4: Simplify right side
    85,863.47x = 5,984,044,720.58
  5. Step 5: Solve for x
    x = 5,984,044,720.58/85,863.47
  6. Step 6: Final answer
    x = 69,692.56

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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.