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Finding the Fourth Proportional to 48,008.40, 72,012.60 and 39,697.80

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Solution

The fourth proportional to 48,008.40, 72,012.60 and 39,697.80 is: 59,546.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,008.40 : 72,012.60 = 39,697.80 : x
  2. Step 2: Convert to fraction form
    48,008.40/72,012.60 = 39,697.80/x
  3. Step 3: Cross multiply
    48,008.40x = 72,012.60 × 39,697.80
  4. Step 4: Simplify right side
    48,008.40x = 2,858,741,792.28
  5. Step 5: Solve for x
    x = 2,858,741,792.28/48,008.40
  6. Step 6: Final answer
    x = 59,546.70

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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.