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Finding the Fourth Proportional to 72,807.64, 109,071.39 and 44,645.49

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Solution

The fourth proportional to 72,807.64, 109,071.39 and 44,645.49 is: 66,882.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,807.64 : 109,071.39 = 44,645.49 : x
  2. Step 2: Convert to fraction form
    72,807.64/109,071.39 = 44,645.49/x
  3. Step 3: Cross multiply
    72,807.64x = 109,071.39 × 44,645.49
  4. Step 4: Simplify right side
    72,807.64x = 4,869,545,651.53
  5. Step 5: Solve for x
    x = 4,869,545,651.53/72,807.64
  6. Step 6: Final answer
    x = 66,882.34

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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.