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Finding the Fourth Proportional to 30,269.40, 45,404.10 and 28,301.10

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Solution

The fourth proportional to 30,269.40, 45,404.10 and 28,301.10 is: 42,451.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,269.40 : 45,404.10 = 28,301.10 : x
  2. Step 2: Convert to fraction form
    30,269.40/45,404.10 = 28,301.10/x
  3. Step 3: Cross multiply
    30,269.40x = 45,404.10 × 28,301.10
  4. Step 4: Simplify right side
    30,269.40x = 1,284,985,974.51
  5. Step 5: Solve for x
    x = 1,284,985,974.51/30,269.40
  6. Step 6: Final answer
    x = 42,451.65

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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.