Home / 85,546.72-128,287.20-29,376.32

Finding the Fourth Proportional to 85,546.72, 128,287.20 and 29,376.32

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Solution

The fourth proportional to 85,546.72, 128,287.20 and 29,376.32 is: 44,053.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,546.72 : 128,287.20 = 29,376.32 : x
  2. Step 2: Convert to fraction form
    85,546.72/128,287.20 = 29,376.32/x
  3. Step 3: Cross multiply
    85,546.72x = 128,287.20 × 29,376.32
  4. Step 4: Simplify right side
    85,546.72x = 3,768,605,839.10
  5. Step 5: Solve for x
    x = 3,768,605,839.10/85,546.72
  6. Step 6: Final answer
    x = 44,053.19

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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.