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Finding the Fourth Proportional to 28,082,720.30, 39,429,182.50 and 28,082,720.30

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Solution

The fourth proportional to 28,082,720.30, 39,429,182.50 and 28,082,720.30 is: 39,429,182.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,082,720.30 : 39,429,182.50 = 28,082,720.30 : x
  2. Step 2: Convert to fraction form
    28,082,720.30/39,429,182.50 = 28,082,720.30/x
  3. Step 3: Cross multiply
    28,082,720.30x = 39,429,182.50 × 28,082,720.30
  4. Step 4: Simplify right side
    28,082,720.30x = 1,107,278,703,805,154.75
  5. Step 5: Solve for x
    x = 1,107,278,703,805,154.75/28,082,720.30
  6. Step 6: Final answer
    x = 39,429,182.50

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.