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Finding the Fourth Proportional to 81,820.80, 112,848.63 and 55,994.63

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Solution

The fourth proportional to 81,820.80, 112,848.63 and 55,994.63 is: 77,228.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,820.80 : 112,848.63 = 55,994.63 : x
  2. Step 2: Convert to fraction form
    81,820.80/112,848.63 = 55,994.63/x
  3. Step 3: Cross multiply
    81,820.80x = 112,848.63 × 55,994.63
  4. Step 4: Simplify right side
    81,820.80x = 6,318,917,578.00
  5. Step 5: Solve for x
    x = 6,318,917,578.00/81,820.80
  6. Step 6: Final answer
    x = 77,228.75

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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.