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Finding the Fourth Proportional to 72,003.80, 107,919.30 and 36,925.40

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Solution

The fourth proportional to 72,003.80, 107,919.30 and 36,925.40 is: 55,343.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,003.80 : 107,919.30 = 36,925.40 : x
  2. Step 2: Convert to fraction form
    72,003.80/107,919.30 = 36,925.40/x
  3. Step 3: Cross multiply
    72,003.80x = 107,919.30 × 36,925.40
  4. Step 4: Simplify right side
    72,003.80x = 3,984,963,320.22
  5. Step 5: Solve for x
    x = 3,984,963,320.22/72,003.80
  6. Step 6: Final answer
    x = 55,343.79

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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.