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Finding the Fourth Proportional to 55,808.72, 83,703.88 and 18,369.28

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Solution

The fourth proportional to 55,808.72, 83,703.88 and 18,369.28 is: 27,550.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,808.72 : 83,703.88 = 18,369.28 : x
  2. Step 2: Convert to fraction form
    55,808.72/83,703.88 = 18,369.28/x
  3. Step 3: Cross multiply
    55,808.72x = 83,703.88 × 18,369.28
  4. Step 4: Simplify right side
    55,808.72x = 1,537,580,008.81
  5. Step 5: Solve for x
    x = 1,537,580,008.81/55,808.72
  6. Step 6: Final answer
    x = 27,550.89

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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.