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Finding the Fourth Proportional to 73,152.78, 100,950.96 and 39,618.78

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Solution

The fourth proportional to 73,152.78, 100,950.96 and 39,618.78 is: 54,673.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,152.78 : 100,950.96 = 39,618.78 : x
  2. Step 2: Convert to fraction form
    73,152.78/100,950.96 = 39,618.78/x
  3. Step 3: Cross multiply
    73,152.78x = 100,950.96 × 39,618.78
  4. Step 4: Simplify right side
    73,152.78x = 3,999,553,875.03
  5. Step 5: Solve for x
    x = 3,999,553,875.03/73,152.78
  6. Step 6: Final answer
    x = 54,673.98

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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.