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Finding the Fourth Proportional to 73,314.80, 101,175.60 and 39,780.80

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Solution

The fourth proportional to 73,314.80, 101,175.60 and 39,780.80 is: 54,898.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,314.80 : 101,175.60 = 39,780.80 : x
  2. Step 2: Convert to fraction form
    73,314.80/101,175.60 = 39,780.80/x
  3. Step 3: Cross multiply
    73,314.80x = 101,175.60 × 39,780.80
  4. Step 4: Simplify right side
    73,314.80x = 4,024,846,308.48
  5. Step 5: Solve for x
    x = 4,024,846,308.48/73,314.80
  6. Step 6: Final answer
    x = 54,898.14

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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.