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Finding the Fourth Proportional to 85,259.80, 127,716.90 and 48,280.60

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Solution

The fourth proportional to 85,259.80, 127,716.90 and 48,280.60 is: 72,323.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,259.80 : 127,716.90 = 48,280.60 : x
  2. Step 2: Convert to fraction form
    85,259.80/127,716.90 = 48,280.60/x
  3. Step 3: Cross multiply
    85,259.80x = 127,716.90 × 48,280.60
  4. Step 4: Simplify right side
    85,259.80x = 6,166,248,562.14
  5. Step 5: Solve for x
    x = 6,166,248,562.14/85,259.80
  6. Step 6: Final answer
    x = 72,323.05

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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.