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Finding the Fourth Proportional to 65,491.40, 98,237.64 and 40,603.88

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Solution

The fourth proportional to 65,491.40, 98,237.64 and 40,603.88 is: 60,906.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,491.40 : 98,237.64 = 40,603.88 : x
  2. Step 2: Convert to fraction form
    65,491.40/98,237.64 = 40,603.88/x
  3. Step 3: Cross multiply
    65,491.40x = 98,237.64 × 40,603.88
  4. Step 4: Simplify right side
    65,491.40x = 3,988,829,346.04
  5. Step 5: Solve for x
    x = 3,988,829,346.04/65,491.40
  6. Step 6: Final answer
    x = 60,906.15

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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.