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Finding the Fourth Proportional to 73,029.40, 100,780.00 and 39,495.40

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Solution

The fourth proportional to 73,029.40, 100,780.00 and 39,495.40 is: 54,503.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,029.40 : 100,780.00 = 39,495.40 : x
  2. Step 2: Convert to fraction form
    73,029.40/100,780.00 = 39,495.40/x
  3. Step 3: Cross multiply
    73,029.40x = 100,780.00 × 39,495.40
  4. Step 4: Simplify right side
    73,029.40x = 3,980,346,061.31
  5. Step 5: Solve for x
    x = 3,980,346,061.31/73,029.40
  6. Step 6: Final answer
    x = 54,503.34

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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.