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Finding the Fourth Proportional to 74,692.36, 102,933.54 and 53,434.72

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Solution

The fourth proportional to 74,692.36, 102,933.54 and 53,434.72 is: 73,638.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,692.36 : 102,933.54 = 53,434.72 : x
  2. Step 2: Convert to fraction form
    74,692.36/102,933.54 = 53,434.72/x
  3. Step 3: Cross multiply
    74,692.36x = 102,933.54 × 53,434.72
  4. Step 4: Simplify right side
    74,692.36x = 5,500,224,888.51
  5. Step 5: Solve for x
    x = 5,500,224,888.51/74,692.36
  6. Step 6: Final answer
    x = 73,638.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.