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Finding the Fourth Proportional to 90,605.60, 125,036.52 and 52,872.56

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Solution

The fourth proportional to 90,605.60, 125,036.52 and 52,872.56 is: 72,964.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,605.60 : 125,036.52 = 52,872.56 : x
  2. Step 2: Convert to fraction form
    90,605.60/125,036.52 = 52,872.56/x
  3. Step 3: Cross multiply
    90,605.60x = 125,036.52 × 52,872.56
  4. Step 4: Simplify right side
    90,605.60x = 6,611,000,905.89
  5. Step 5: Solve for x
    x = 6,611,000,905.89/90,605.60
  6. Step 6: Final answer
    x = 72,964.59

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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.