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Finding the Fourth Proportional to 74,487.81, 102,815.00 and 44,294.40

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Solution

The fourth proportional to 74,487.81, 102,815.00 and 44,294.40 is: 61,139.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,487.81 : 102,815.00 = 44,294.40 : x
  2. Step 2: Convert to fraction form
    74,487.81/102,815.00 = 44,294.40/x
  3. Step 3: Cross multiply
    74,487.81x = 102,815.00 × 44,294.40
  4. Step 4: Simplify right side
    74,487.81x = 4,554,128,514.53
  5. Step 5: Solve for x
    x = 4,554,128,514.53/74,487.81
  6. Step 6: Final answer
    x = 61,139.25

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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.