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Finding the Fourth Proportional to 66,313.65, 99,471.51 and 36,918.32

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Solution

The fourth proportional to 66,313.65, 99,471.51 and 36,918.32 is: 55,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,313.65 : 99,471.51 = 36,918.32 : x
  2. Step 2: Convert to fraction form
    66,313.65/99,471.51 = 36,918.32/x
  3. Step 3: Cross multiply
    66,313.65x = 99,471.51 × 36,918.32
  4. Step 4: Simplify right side
    66,313.65x = 3,672,320,539.71
  5. Step 5: Solve for x
    x = 3,672,320,539.71/66,313.65
  6. Step 6: Final answer
    x = 55,378.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.