Home / 81,637.12-112,664.28-54,366.44

Finding the Fourth Proportional to 81,637.12, 112,664.28 and 54,366.44

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Solution

The fourth proportional to 81,637.12, 112,664.28 and 54,366.44 is: 75,029.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,637.12 : 112,664.28 = 54,366.44 : x
  2. Step 2: Convert to fraction form
    81,637.12/112,664.28 = 54,366.44/x
  3. Step 3: Cross multiply
    81,637.12x = 112,664.28 × 54,366.44
  4. Step 4: Simplify right side
    81,637.12x = 6,125,155,818.76
  5. Step 5: Solve for x
    x = 6,125,155,818.76/81,637.12
  6. Step 6: Final answer
    x = 75,029.05

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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.