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Finding the Fourth Proportional to 72,651.60, 100,293.30 and 48,492.90

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Solution

The fourth proportional to 72,651.60, 100,293.30 and 48,492.90 is: 66,942.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,651.60 : 100,293.30 = 48,492.90 : x
  2. Step 2: Convert to fraction form
    72,651.60/100,293.30 = 48,492.90/x
  3. Step 3: Cross multiply
    72,651.60x = 100,293.30 × 48,492.90
  4. Step 4: Simplify right side
    72,651.60x = 4,863,512,967.57
  5. Step 5: Solve for x
    x = 4,863,512,967.57/72,651.60
  6. Step 6: Final answer
    x = 66,942.96

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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.