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Finding the Fourth Proportional to 61,803.90, 85,285.86 and 36,306.30

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Solution

The fourth proportional to 61,803.90, 85,285.86 and 36,306.30 is: 50,100.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,803.90 : 85,285.86 = 36,306.30 : x
  2. Step 2: Convert to fraction form
    61,803.90/85,285.86 = 36,306.30/x
  3. Step 3: Cross multiply
    61,803.90x = 85,285.86 × 36,306.30
  4. Step 4: Simplify right side
    61,803.90x = 3,096,414,018.92
  5. Step 5: Solve for x
    x = 3,096,414,018.92/61,803.90
  6. Step 6: Final answer
    x = 50,100.63

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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.