Home / 47,805.10-65,987.40-28,942.21

Finding the Fourth Proportional to 47,805.10, 65,987.40 and 28,942.21

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Solution

The fourth proportional to 47,805.10, 65,987.40 and 28,942.21 is: 39,950.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,805.10 : 65,987.40 = 28,942.21 : x
  2. Step 2: Convert to fraction form
    47,805.10/65,987.40 = 28,942.21/x
  3. Step 3: Cross multiply
    47,805.10x = 65,987.40 × 28,942.21
  4. Step 4: Simplify right side
    47,805.10x = 1,909,821,188.15
  5. Step 5: Solve for x
    x = 1,909,821,188.15/47,805.10
  6. Step 6: Final answer
    x = 39,950.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.