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Finding the Fourth Proportional to 33,402,005.40, 50,103,008.10 and 20,647,421.40

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Solution

The fourth proportional to 33,402,005.40, 50,103,008.10 and 20,647,421.40 is: 30,971,132.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,402,005.40 : 50,103,008.10 = 20,647,421.40 : x
  2. Step 2: Convert to fraction form
    33,402,005.40/50,103,008.10 = 20,647,421.40/x
  3. Step 3: Cross multiply
    33,402,005.40x = 50,103,008.10 × 20,647,421.40
  4. Step 4: Simplify right side
    33,402,005.40x = 1,034,497,921,648,313.25
  5. Step 5: Solve for x
    x = 1,034,497,921,648,313.25/33,402,005.40
  6. Step 6: Final answer
    x = 30,971,132.10

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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.