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Finding the Fourth Proportional to 61,833.12, 85,362.80 and 48,375.80

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Solution

The fourth proportional to 61,833.12, 85,362.80 and 48,375.80 is: 66,784.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,833.12 : 85,362.80 = 48,375.80 : x
  2. Step 2: Convert to fraction form
    61,833.12/85,362.80 = 48,375.80/x
  3. Step 3: Cross multiply
    61,833.12x = 85,362.80 × 48,375.80
  4. Step 4: Simplify right side
    61,833.12x = 4,129,493,740.24
  5. Step 5: Solve for x
    x = 4,129,493,740.24/61,833.12
  6. Step 6: Final answer
    x = 66,784.50

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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.