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Finding the Fourth Proportional to 61,282.20, 91,923.30 and 45,730.20

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Solution

The fourth proportional to 61,282.20, 91,923.30 and 45,730.20 is: 68,595.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,282.20 : 91,923.30 = 45,730.20 : x
  2. Step 2: Convert to fraction form
    61,282.20/91,923.30 = 45,730.20/x
  3. Step 3: Cross multiply
    61,282.20x = 91,923.30 × 45,730.20
  4. Step 4: Simplify right side
    61,282.20x = 4,203,670,893.66
  5. Step 5: Solve for x
    x = 4,203,670,893.66/61,282.20
  6. Step 6: Final answer
    x = 68,595.30

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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.