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Finding the Fourth Proportional to 61,700.64, 92,550.93 and 20,147.64

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Solution

The fourth proportional to 61,700.64, 92,550.93 and 20,147.64 is: 30,221.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,700.64 : 92,550.93 = 20,147.64 : x
  2. Step 2: Convert to fraction form
    61,700.64/92,550.93 = 20,147.64/x
  3. Step 3: Cross multiply
    61,700.64x = 92,550.93 × 20,147.64
  4. Step 4: Simplify right side
    61,700.64x = 1,864,682,819.31
  5. Step 5: Solve for x
    x = 1,864,682,819.31/61,700.64
  6. Step 6: Final answer
    x = 30,221.45

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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.