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Finding the Fourth Proportional to 29,979,117.60, 44,897,817.60 and 20,342,320.80

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Solution

The fourth proportional to 29,979,117.60, 44,897,817.60 and 20,342,320.80 is: 30,465,399.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,979,117.60 : 44,897,817.60 = 20,342,320.80 : x
  2. Step 2: Convert to fraction form
    29,979,117.60/44,897,817.60 = 20,342,320.80/x
  3. Step 3: Cross multiply
    29,979,117.60x = 44,897,817.60 × 20,342,320.80
  4. Step 4: Simplify right side
    29,979,117.60x = 913,325,808,839,086.12
  5. Step 5: Solve for x
    x = 913,325,808,839,086.12/29,979,117.60
  6. Step 6: Final answer
    x = 30,465,399.98

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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.