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Finding the Fourth Proportional to 42,987.33, 64,527.71 and 36,354.71

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Solution

The fourth proportional to 42,987.33, 64,527.71 and 36,354.71 is: 54,571.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,987.33 : 64,527.71 = 36,354.71 : x
  2. Step 2: Convert to fraction form
    42,987.33/64,527.71 = 36,354.71/x
  3. Step 3: Cross multiply
    42,987.33x = 64,527.71 × 36,354.71
  4. Step 4: Simplify right side
    42,987.33x = 2,345,886,163.56
  5. Step 5: Solve for x
    x = 2,345,886,163.56/42,987.33
  6. Step 6: Final answer
    x = 54,571.57

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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.