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Finding the Fourth Proportional to 90,573.40, 135,898.56 and 48,442.56

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Solution

The fourth proportional to 90,573.40, 135,898.56 and 48,442.56 is: 72,684.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,573.40 : 135,898.56 = 48,442.56 : x
  2. Step 2: Convert to fraction form
    90,573.40/135,898.56 = 48,442.56/x
  3. Step 3: Cross multiply
    90,573.40x = 135,898.56 × 48,442.56
  4. Step 4: Simplify right side
    90,573.40x = 6,583,274,146.71
  5. Step 5: Solve for x
    x = 6,583,274,146.71/90,573.40
  6. Step 6: Final answer
    x = 72,684.41

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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.