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Finding the Fourth Proportional to 61,134.70, 85,646.90 and 61,134.70

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Solution

The fourth proportional to 61,134.70, 85,646.90 and 61,134.70 is: 85,646.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,134.70 : 85,646.90 = 61,134.70 : x
  2. Step 2: Convert to fraction form
    61,134.70/85,646.90 = 61,134.70/x
  3. Step 3: Cross multiply
    61,134.70x = 85,646.90 × 61,134.70
  4. Step 4: Simplify right side
    61,134.70x = 5,235,997,537.43
  5. Step 5: Solve for x
    x = 5,235,997,537.43/61,134.70
  6. Step 6: Final answer
    x = 85,646.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.