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Finding the Fourth Proportional to 45,264.80, 67,999.60 and 31,440.80

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Solution

The fourth proportional to 45,264.80, 67,999.60 and 31,440.80 is: 47,232.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,264.80 : 67,999.60 = 31,440.80 : x
  2. Step 2: Convert to fraction form
    45,264.80/67,999.60 = 31,440.80/x
  3. Step 3: Cross multiply
    45,264.80x = 67,999.60 × 31,440.80
  4. Step 4: Simplify right side
    45,264.80x = 2,137,961,823.68
  5. Step 5: Solve for x
    x = 2,137,961,823.68/45,264.80
  6. Step 6: Final answer
    x = 47,232.33

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1.5x scale

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.