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Finding the Fourth Proportional to 85,741.40, 118,286.80 and 53,898.68

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Solution

The fourth proportional to 85,741.40, 118,286.80 and 53,898.68 is: 74,357.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,741.40 : 118,286.80 = 53,898.68 : x
  2. Step 2: Convert to fraction form
    85,741.40/118,286.80 = 53,898.68/x
  3. Step 3: Cross multiply
    85,741.40x = 118,286.80 × 53,898.68
  4. Step 4: Simplify right side
    85,741.40x = 6,375,502,542.39
  5. Step 5: Solve for x
    x = 6,375,502,542.39/85,741.40
  6. Step 6: Final answer
    x = 74,357.34

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1.5x scale

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.