Home / 81,828.96-112,434.60-65,032.80

Finding the Fourth Proportional to 81,828.96, 112,434.60 and 65,032.80

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Solution

The fourth proportional to 81,828.96, 112,434.60 and 65,032.80 is: 89,356.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,828.96 : 112,434.60 = 65,032.80 : x
  2. Step 2: Convert to fraction form
    81,828.96/112,434.60 = 65,032.80/x
  3. Step 3: Cross multiply
    81,828.96x = 112,434.60 × 65,032.80
  4. Step 4: Simplify right side
    81,828.96x = 7,311,936,854.88
  5. Step 5: Solve for x
    x = 7,311,936,854.88/81,828.96
  6. Step 6: Final answer
    x = 89,356.35

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.