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Finding the Fourth Proportional to 44,642.76, 66,969.66 and 20,938.08

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Solution

The fourth proportional to 44,642.76, 66,969.66 and 20,938.08 is: 31,409.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,642.76 : 66,969.66 = 20,938.08 : x
  2. Step 2: Convert to fraction form
    44,642.76/66,969.66 = 20,938.08/x
  3. Step 3: Cross multiply
    44,642.76x = 66,969.66 × 20,938.08
  4. Step 4: Simplify right side
    44,642.76x = 1,402,216,098.65
  5. Step 5: Solve for x
    x = 1,402,216,098.65/44,642.76
  6. Step 6: Final answer
    x = 31,409.71

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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.