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Finding the Fourth Proportional to 60,522,402.80, 90,791,898.60 and 20,128,674.80

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Solution

The fourth proportional to 60,522,402.80, 90,791,898.60 and 20,128,674.80 is: 30,195,770.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,522,402.80 : 90,791,898.60 = 20,128,674.80 : x
  2. Step 2: Convert to fraction form
    60,522,402.80/90,791,898.60 = 20,128,674.80/x
  3. Step 3: Cross multiply
    60,522,402.80x = 90,791,898.60 × 20,128,674.80
  4. Step 4: Simplify right side
    60,522,402.80x = 1,827,520,601,393,975.25
  5. Step 5: Solve for x
    x = 1,827,520,601,393,975.25/60,522,402.80
  6. Step 6: Final answer
    x = 30,195,770.77

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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.