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Finding the Fourth Proportional to 47,312, 65,291.04 and 28,449.44

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Solution

The fourth proportional to 47,312, 65,291.04 and 28,449.44 is: 39,260.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,312 : 65,291.04 = 28,449.44 : x
  2. Step 2: Convert to fraction form
    47,312/65,291.04 = 28,449.44/x
  3. Step 3: Cross multiply
    47,312x = 65,291.04 × 28,449.44
  4. Step 4: Simplify right side
    47,312x = 1,857,493,525.02
  5. Step 5: Solve for x
    x = 1,857,493,525.02/47,312
  6. Step 6: Final answer
    x = 39,260.52

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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.