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Finding the Fourth Proportional to 73,153.78, 100,952.34 and 39,619.78

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Solution

The fourth proportional to 73,153.78, 100,952.34 and 39,619.78 is: 54,675.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,153.78 : 100,952.34 = 39,619.78 : x
  2. Step 2: Convert to fraction form
    73,153.78/100,952.34 = 39,619.78/x
  3. Step 3: Cross multiply
    73,153.78x = 100,952.34 × 39,619.78
  4. Step 4: Simplify right side
    73,153.78x = 3,999,709,501.29
  5. Step 5: Solve for x
    x = 3,999,709,501.29/73,153.78
  6. Step 6: Final answer
    x = 54,675.36

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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.