Home / 86,852.25-129,982.32-72,827.91

Finding the Fourth Proportional to 86,852.25, 129,982.32 and 72,827.91

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Solution

The fourth proportional to 86,852.25, 129,982.32 and 72,827.91 is: 108,993.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,852.25 : 129,982.32 = 72,827.91 : x
  2. Step 2: Convert to fraction form
    86,852.25/129,982.32 = 72,827.91/x
  3. Step 3: Cross multiply
    86,852.25x = 129,982.32 × 72,827.91
  4. Step 4: Simplify right side
    86,852.25x = 9,466,340,702.55
  5. Step 5: Solve for x
    x = 9,466,340,702.55/86,852.25
  6. Step 6: Final answer
    x = 108,993.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.