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Finding the Fourth Proportional to 65,372.64, 98,068.72 and 30,315.84

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Solution

The fourth proportional to 65,372.64, 98,068.72 and 30,315.84 is: 45,478.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,372.64 : 98,068.72 = 30,315.84 : x
  2. Step 2: Convert to fraction form
    65,372.64/98,068.72 = 30,315.84/x
  3. Step 3: Cross multiply
    65,372.64x = 98,068.72 × 30,315.84
  4. Step 4: Simplify right side
    65,372.64x = 2,973,035,624.52
  5. Step 5: Solve for x
    x = 2,973,035,624.52/65,372.64
  6. Step 6: Final answer
    x = 45,478.29

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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.