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Finding the Fourth Proportional to 73,808.40, 110,728.80 and 36,386.40

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Solution

The fourth proportional to 73,808.40, 110,728.80 and 36,386.40 is: 54,587.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,808.40 : 110,728.80 = 36,386.40 : x
  2. Step 2: Convert to fraction form
    73,808.40/110,728.80 = 36,386.40/x
  3. Step 3: Cross multiply
    73,808.40x = 110,728.80 × 36,386.40
  4. Step 4: Simplify right side
    73,808.40x = 4,029,022,408.32
  5. Step 5: Solve for x
    x = 4,029,022,408.32/73,808.40
  6. Step 6: Final answer
    x = 54,587.59

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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.