Home / 90,823.20-136,137.60-40,894.80

Finding the Fourth Proportional to 90,823.20, 136,137.60 and 40,894.80

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Solution

The fourth proportional to 90,823.20, 136,137.60 and 40,894.80 is: 61,298.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,823.20 : 136,137.60 = 40,894.80 : x
  2. Step 2: Convert to fraction form
    90,823.20/136,137.60 = 40,894.80/x
  3. Step 3: Cross multiply
    90,823.20x = 136,137.60 × 40,894.80
  4. Step 4: Simplify right side
    90,823.20x = 5,567,319,924.48
  5. Step 5: Solve for x
    x = 5,567,319,924.48/90,823.20
  6. Step 6: Final answer
    x = 61,298.43

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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.