Home / 84,451.88-116,685.42-66,683.72

Finding the Fourth Proportional to 84,451.88, 116,685.42 and 66,683.72

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Solution

The fourth proportional to 84,451.88, 116,685.42 and 66,683.72 is: 92,135.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,451.88 : 116,685.42 = 66,683.72 : x
  2. Step 2: Convert to fraction form
    84,451.88/116,685.42 = 66,683.72/x
  3. Step 3: Cross multiply
    84,451.88x = 116,685.42 × 66,683.72
  4. Step 4: Simplify right side
    84,451.88x = 7,781,017,875.36
  5. Step 5: Solve for x
    x = 7,781,017,875.36/84,451.88
  6. Step 6: Final answer
    x = 92,135.52

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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.