Home / 85,708.20-118,335.77-53,455.43

Finding the Fourth Proportional to 85,708.20, 118,335.77 and 53,455.43

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Solution

The fourth proportional to 85,708.20, 118,335.77 and 53,455.43 is: 73,804.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,708.20 : 118,335.77 = 53,455.43 : x
  2. Step 2: Convert to fraction form
    85,708.20/118,335.77 = 53,455.43/x
  3. Step 3: Cross multiply
    85,708.20x = 118,335.77 × 53,455.43
  4. Step 4: Simplify right side
    85,708.20x = 6,325,688,610.78
  5. Step 5: Solve for x
    x = 6,325,688,610.78/85,708.20
  6. Step 6: Final answer
    x = 73,804.94

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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.