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Finding the Fourth Proportional to 65,368.64, 98,062.68 and 30,311.84

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Solution

The fourth proportional to 65,368.64, 98,062.68 and 30,311.84 is: 45,472.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,368.64 : 98,062.68 = 30,311.84 : x
  2. Step 2: Convert to fraction form
    65,368.64/98,062.68 = 30,311.84/x
  3. Step 3: Cross multiply
    65,368.64x = 98,062.68 × 30,311.84
  4. Step 4: Simplify right side
    65,368.64x = 2,972,460,266.13
  5. Step 5: Solve for x
    x = 2,972,460,266.13/65,368.64
  6. Step 6: Final answer
    x = 45,472.27

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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.