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Finding the Fourth Proportional to 20,762,357.60, 31,143,536.40 and 20,762,357.60

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Solution

The fourth proportional to 20,762,357.60, 31,143,536.40 and 20,762,357.60 is: 31,143,536.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762,357.60 : 31,143,536.40 = 20,762,357.60 : x
  2. Step 2: Convert to fraction form
    20,762,357.60/31,143,536.40 = 20,762,357.60/x
  3. Step 3: Cross multiply
    20,762,357.60x = 31,143,536.40 × 20,762,357.60
  4. Step 4: Simplify right side
    20,762,357.60x = 646,613,239,665,416.62
  5. Step 5: Solve for x
    x = 646,613,239,665,416.62/20,762,357.60
  6. Step 6: Final answer
    x = 31,143,536.40

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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.