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Finding the Fourth Proportional to 61,900.28, 85,422.73 and 36,407.72

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Solution

The fourth proportional to 61,900.28, 85,422.73 and 36,407.72 is: 50,242.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,900.28 : 85,422.73 = 36,407.72 : x
  2. Step 2: Convert to fraction form
    61,900.28/85,422.73 = 36,407.72/x
  3. Step 3: Cross multiply
    61,900.28x = 85,422.73 × 36,407.72
  4. Step 4: Simplify right side
    61,900.28x = 3,110,046,835.48
  5. Step 5: Solve for x
    x = 3,110,046,835.48/61,900.28
  6. Step 6: Final answer
    x = 50,242.86

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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.