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Finding the Fourth Proportional to 55,193.70, 82,790.55 and 42,071.70

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Solution

The fourth proportional to 55,193.70, 82,790.55 and 42,071.70 is: 63,107.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,193.70 : 82,790.55 = 42,071.70 : x
  2. Step 2: Convert to fraction form
    55,193.70/82,790.55 = 42,071.70/x
  3. Step 3: Cross multiply
    55,193.70x = 82,790.55 × 42,071.70
  4. Step 4: Simplify right side
    55,193.70x = 3,483,139,182.44
  5. Step 5: Solve for x
    x = 3,483,139,182.44/55,193.70
  6. Step 6: Final answer
    x = 63,107.55

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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.