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Finding the Fourth Proportional to 61,930.74, 85,449.78 and 36,438.22

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Solution

The fourth proportional to 61,930.74, 85,449.78 and 36,438.22 is: 50,276.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,930.74 : 85,449.78 = 36,438.22 : x
  2. Step 2: Convert to fraction form
    61,930.74/85,449.78 = 36,438.22/x
  3. Step 3: Cross multiply
    61,930.74x = 85,449.78 × 36,438.22
  4. Step 4: Simplify right side
    61,930.74x = 3,113,637,668.97
  5. Step 5: Solve for x
    x = 3,113,637,668.97/61,930.74
  6. Step 6: Final answer
    x = 50,276.13

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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.