Home / 84,987.54-117,261.81-53,140.50

Finding the Fourth Proportional to 84,987.54, 117,261.81 and 53,140.50

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Solution

The fourth proportional to 84,987.54, 117,261.81 and 53,140.50 is: 73,320.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,987.54 : 117,261.81 = 53,140.50 : x
  2. Step 2: Convert to fraction form
    84,987.54/117,261.81 = 53,140.50/x
  3. Step 3: Cross multiply
    84,987.54x = 117,261.81 × 53,140.50
  4. Step 4: Simplify right side
    84,987.54x = 6,231,351,214.31
  5. Step 5: Solve for x
    x = 6,231,351,214.31/84,987.54
  6. Step 6: Final answer
    x = 73,320.76

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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.