Home / 85,899.30-128,857.76-29,739.32

Finding the Fourth Proportional to 85,899.30, 128,857.76 and 29,739.32

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Solution

The fourth proportional to 85,899.30, 128,857.76 and 29,739.32 is: 44,612.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,899.30 : 128,857.76 = 29,739.32 : x
  2. Step 2: Convert to fraction form
    85,899.30/128,857.76 = 29,739.32/x
  3. Step 3: Cross multiply
    85,899.30x = 128,857.76 × 29,739.32
  4. Step 4: Simplify right side
    85,899.30x = 3,832,142,159.12
  5. Step 5: Solve for x
    x = 3,832,142,159.12/85,899.30
  6. Step 6: Final answer
    x = 44,612.03

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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.