Home / 85,285.84-117,742.56-59,139.04

Finding the Fourth Proportional to 85,285.84, 117,742.56 and 59,139.04

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Solution

The fourth proportional to 85,285.84, 117,742.56 and 59,139.04 is: 81,645.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,285.84 : 117,742.56 = 59,139.04 : x
  2. Step 2: Convert to fraction form
    85,285.84/117,742.56 = 59,139.04/x
  3. Step 3: Cross multiply
    85,285.84x = 117,742.56 × 59,139.04
  4. Step 4: Simplify right side
    85,285.84x = 6,963,181,965.54
  5. Step 5: Solve for x
    x = 6,963,181,965.54/85,285.84
  6. Step 6: Final answer
    x = 81,645.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.