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Finding the Fourth Proportional to 61,251.50, 84,464.88 and 57,679.94

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Solution

The fourth proportional to 61,251.50, 84,464.88 and 57,679.94 is: 79,539.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,251.50 : 84,464.88 = 57,679.94 : x
  2. Step 2: Convert to fraction form
    61,251.50/84,464.88 = 57,679.94/x
  3. Step 3: Cross multiply
    61,251.50x = 84,464.88 × 57,679.94
  4. Step 4: Simplify right side
    61,251.50x = 4,871,929,210.51
  5. Step 5: Solve for x
    x = 4,871,929,210.51/61,251.50
  6. Step 6: Final answer
    x = 79,539.75

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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.