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Finding the Fourth Proportional to 45,980.88, 69,029.70 and 39,099.12

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Solution

The fourth proportional to 45,980.88, 69,029.70 and 39,099.12 is: 58,698.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,980.88 : 69,029.70 = 39,099.12 : x
  2. Step 2: Convert to fraction form
    45,980.88/69,029.70 = 39,099.12/x
  3. Step 3: Cross multiply
    45,980.88x = 69,029.70 × 39,099.12
  4. Step 4: Simplify right side
    45,980.88x = 2,699,000,523.86
  5. Step 5: Solve for x
    x = 2,699,000,523.86/45,980.88
  6. Step 6: Final answer
    x = 58,698.32

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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.