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Finding the Fourth Proportional to 73,918.20, 102,004.94 and 40,384.20

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Solution

The fourth proportional to 73,918.20, 102,004.94 and 40,384.20 is: 55,729.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,918.20 : 102,004.94 = 40,384.20 : x
  2. Step 2: Convert to fraction form
    73,918.20/102,004.94 = 40,384.20/x
  3. Step 3: Cross multiply
    73,918.20x = 102,004.94 × 40,384.20
  4. Step 4: Simplify right side
    73,918.20x = 4,119,387,897.95
  5. Step 5: Solve for x
    x = 4,119,387,897.95/73,918.20
  6. Step 6: Final answer
    x = 55,729.01

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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.