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Finding the Fourth Proportional to 85,254.40, 127,881.60 and 47,200.60

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Solution

The fourth proportional to 85,254.40, 127,881.60 and 47,200.60 is: 70,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,254.40 : 127,881.60 = 47,200.60 : x
  2. Step 2: Convert to fraction form
    85,254.40/127,881.60 = 47,200.60/x
  3. Step 3: Cross multiply
    85,254.40x = 127,881.60 × 47,200.60
  4. Step 4: Simplify right side
    85,254.40x = 6,036,088,248.96
  5. Step 5: Solve for x
    x = 6,036,088,248.96/85,254.40
  6. Step 6: Final answer
    x = 70,800.90

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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.