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Finding the Fourth Proportional to 56,692.62, 85,035.51 and 21,146.94

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Solution

The fourth proportional to 56,692.62, 85,035.51 and 21,146.94 is: 31,719.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,692.62 : 85,035.51 = 21,146.94 : x
  2. Step 2: Convert to fraction form
    56,692.62/85,035.51 = 21,146.94/x
  3. Step 3: Cross multiply
    56,692.62x = 85,035.51 × 21,146.94
  4. Step 4: Simplify right side
    56,692.62x = 1,798,240,827.84
  5. Step 5: Solve for x
    x = 1,798,240,827.84/56,692.62
  6. Step 6: Final answer
    x = 31,719.13

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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.