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Finding the Fourth Proportional to 74,574.50, 102,911.13 and 40,583.09

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Solution

The fourth proportional to 74,574.50, 102,911.13 and 40,583.09 is: 56,003.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,574.50 : 102,911.13 = 40,583.09 : x
  2. Step 2: Convert to fraction form
    74,574.50/102,911.13 = 40,583.09/x
  3. Step 3: Cross multiply
    74,574.50x = 102,911.13 × 40,583.09
  4. Step 4: Simplify right side
    74,574.50x = 4,176,451,908.07
  5. Step 5: Solve for x
    x = 4,176,451,908.07/74,574.50
  6. Step 6: Final answer
    x = 56,003.76

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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.