Home / 81,639.12-112,667.04-54,368.44

Finding the Fourth Proportional to 81,639.12, 112,667.04 and 54,368.44

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Solution

The fourth proportional to 81,639.12, 112,667.04 and 54,368.44 is: 75,031.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,639.12 : 112,667.04 = 54,368.44 : x
  2. Step 2: Convert to fraction form
    81,639.12/112,667.04 = 54,368.44/x
  3. Step 3: Cross multiply
    81,639.12x = 112,667.04 × 54,368.44
  4. Step 4: Simplify right side
    81,639.12x = 6,125,531,204.22
  5. Step 5: Solve for x
    x = 6,125,531,204.22/81,639.12
  6. Step 6: Final answer
    x = 75,031.81

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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.