Home / 85,904.39-128,825.71-29,729.25

Finding the Fourth Proportional to 85,904.39, 128,825.71 and 29,729.25

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Solution

The fourth proportional to 85,904.39, 128,825.71 and 29,729.25 is: 44,583.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,904.39 : 128,825.71 = 29,729.25 : x
  2. Step 2: Convert to fraction form
    85,904.39/128,825.71 = 29,729.25/x
  3. Step 3: Cross multiply
    85,904.39x = 128,825.71 × 29,729.25
  4. Step 4: Simplify right side
    85,904.39x = 3,829,891,664.69
  5. Step 5: Solve for x
    x = 3,829,891,664.69/85,904.39
  6. Step 6: Final answer
    x = 44,583.19

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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.