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Finding the Fourth Proportional to 85,276.40, 127,914.60 and 48,412.40

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Solution

The fourth proportional to 85,276.40, 127,914.60 and 48,412.40 is: 72,618.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,276.40 : 127,914.60 = 48,412.40 : x
  2. Step 2: Convert to fraction form
    85,276.40/127,914.60 = 48,412.40/x
  3. Step 3: Cross multiply
    85,276.40x = 127,914.60 × 48,412.40
  4. Step 4: Simplify right side
    85,276.40x = 6,192,652,781.04
  5. Step 5: Solve for x
    x = 6,192,652,781.04/85,276.40
  6. Step 6: Final answer
    x = 72,618.60

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1.5x scale

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.