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Finding the Fourth Proportional to 65,963.40, 98,758.80 and 51,342.90

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Solution

The fourth proportional to 65,963.40, 98,758.80 and 51,342.90 is: 76,869.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,963.40 : 98,758.80 = 51,342.90 : x
  2. Step 2: Convert to fraction form
    65,963.40/98,758.80 = 51,342.90/x
  3. Step 3: Cross multiply
    65,963.40x = 98,758.80 × 51,342.90
  4. Step 4: Simplify right side
    65,963.40x = 5,070,563,192.52
  5. Step 5: Solve for x
    x = 5,070,563,192.52/65,963.40
  6. Step 6: Final answer
    x = 76,869.34

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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.