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Finding the Fourth Proportional to 61,700.72, 85,147 and 33,406.40

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Solution

The fourth proportional to 61,700.72, 85,147 and 33,406.40 is: 46,100.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,700.72 : 85,147 = 33,406.40 : x
  2. Step 2: Convert to fraction form
    61,700.72/85,147 = 33,406.40/x
  3. Step 3: Cross multiply
    61,700.72x = 85,147 × 33,406.40
  4. Step 4: Simplify right side
    61,700.72x = 2,844,454,740.80
  5. Step 5: Solve for x
    x = 2,844,454,740.80/61,700.72
  6. Step 6: Final answer
    x = 46,100.84

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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.