Home / 81,146.40-111,971.88-45,335.04

Finding the Fourth Proportional to 81,146.40, 111,971.88 and 45,335.04

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Solution

The fourth proportional to 81,146.40, 111,971.88 and 45,335.04 is: 62,556.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,146.40 : 111,971.88 = 45,335.04 : x
  2. Step 2: Convert to fraction form
    81,146.40/111,971.88 = 45,335.04/x
  3. Step 3: Cross multiply
    81,146.40x = 111,971.88 × 45,335.04
  4. Step 4: Simplify right side
    81,146.40x = 5,076,249,658.68
  5. Step 5: Solve for x
    x = 5,076,249,658.68/81,146.40
  6. Step 6: Final answer
    x = 62,556.68

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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.