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Finding the Fourth Proportional to 61,682.34, 85,123.70 and 37,804.40

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Solution

The fourth proportional to 61,682.34, 85,123.70 and 37,804.40 is: 52,171.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,682.34 : 85,123.70 = 37,804.40 : x
  2. Step 2: Convert to fraction form
    61,682.34/85,123.70 = 37,804.40/x
  3. Step 3: Cross multiply
    61,682.34x = 85,123.70 × 37,804.40
  4. Step 4: Simplify right side
    61,682.34x = 3,218,050,404.28
  5. Step 5: Solve for x
    x = 3,218,050,404.28/61,682.34
  6. Step 6: Final answer
    x = 52,171.34

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1.5x scale

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.