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Finding the Fourth Proportional to 61,392, 84,720.96 and 34,896

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Solution

The fourth proportional to 61,392, 84,720.96 and 34,896 is: 48,156.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,392 : 84,720.96 = 34,896 : x
  2. Step 2: Convert to fraction form
    61,392/84,720.96 = 34,896/x
  3. Step 3: Cross multiply
    61,392x = 84,720.96 × 34,896
  4. Step 4: Simplify right side
    61,392x = 2,956,422,620.16
  5. Step 5: Solve for x
    x = 2,956,422,620.16/61,392
  6. Step 6: Final answer
    x = 48,156.48

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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.