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Finding the Fourth Proportional to 61,439, 84,754.88 and 35,928.68

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Solution

The fourth proportional to 61,439, 84,754.88 and 35,928.68 is: 49,563.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,439 : 84,754.88 = 35,928.68 : x
  2. Step 2: Convert to fraction form
    61,439/84,754.88 = 35,928.68/x
  3. Step 3: Cross multiply
    61,439x = 84,754.88 × 35,928.68
  4. Step 4: Simplify right side
    61,439x = 3,045,130,961.96
  5. Step 5: Solve for x
    x = 3,045,130,961.96/61,439
  6. Step 6: Final answer
    x = 49,563.49

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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.