Home / 85,709.20-118,337.15-53,456.43

Finding the Fourth Proportional to 85,709.20, 118,337.15 and 53,456.43

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Solution

The fourth proportional to 85,709.20, 118,337.15 and 53,456.43 is: 73,806.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,709.20 : 118,337.15 = 53,456.43 : x
  2. Step 2: Convert to fraction form
    85,709.20/118,337.15 = 53,456.43/x
  3. Step 3: Cross multiply
    85,709.20x = 118,337.15 × 53,456.43
  4. Step 4: Simplify right side
    85,709.20x = 6,325,881,575.37
  5. Step 5: Solve for x
    x = 6,325,881,575.37/85,709.20
  6. Step 6: Final answer
    x = 73,806.33

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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.