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Finding the Fourth Proportional to 90,611.01, 125,023.05 and 54,800.28

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Solution

The fourth proportional to 90,611.01, 125,023.05 and 54,800.28 is: 75,612.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,611.01 : 125,023.05 = 54,800.28 : x
  2. Step 2: Convert to fraction form
    90,611.01/125,023.05 = 54,800.28/x
  3. Step 3: Cross multiply
    90,611.01x = 125,023.05 × 54,800.28
  4. Step 4: Simplify right side
    90,611.01x = 6,851,298,146.45
  5. Step 5: Solve for x
    x = 6,851,298,146.45/90,611.01
  6. Step 6: Final answer
    x = 75,612.20

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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.