Home / 83,990.34-125,985.27-27,830.61

Finding the Fourth Proportional to 83,990.34, 125,985.27 and 27,830.61

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Solution

The fourth proportional to 83,990.34, 125,985.27 and 27,830.61 is: 41,745.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,990.34 : 125,985.27 = 27,830.61 : x
  2. Step 2: Convert to fraction form
    83,990.34/125,985.27 = 27,830.61/x
  3. Step 3: Cross multiply
    83,990.34x = 125,985.27 × 27,830.61
  4. Step 4: Simplify right side
    83,990.34x = 3,506,246,915.11
  5. Step 5: Solve for x
    x = 3,506,246,915.11/83,990.34
  6. Step 6: Final answer
    x = 41,745.84

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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.