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Finding the Fourth Proportional to 65,982.40, 98,858.40 and 56,766.40

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Solution

The fourth proportional to 65,982.40, 98,858.40 and 56,766.40 is: 85,050.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,982.40 : 98,858.40 = 56,766.40 : x
  2. Step 2: Convert to fraction form
    65,982.40/98,858.40 = 56,766.40/x
  3. Step 3: Cross multiply
    65,982.40x = 98,858.40 × 56,766.40
  4. Step 4: Simplify right side
    65,982.40x = 5,611,835,477.76
  5. Step 5: Solve for x
    x = 5,611,835,477.76/65,982.40
  6. Step 6: Final answer
    x = 85,050.49

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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.