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Finding the Fourth Proportional to 60,012.43, 90,072.78 and 31,955.92

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Solution

The fourth proportional to 60,012.43, 90,072.78 and 31,955.92 is: 47,962.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,012.43 : 90,072.78 = 31,955.92 : x
  2. Step 2: Convert to fraction form
    60,012.43/90,072.78 = 31,955.92/x
  3. Step 3: Cross multiply
    60,012.43x = 90,072.78 × 31,955.92
  4. Step 4: Simplify right side
    60,012.43x = 2,878,358,551.86
  5. Step 5: Solve for x
    x = 2,878,358,551.86/60,012.43
  6. Step 6: Final answer
    x = 47,962.71

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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.