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Finding the Fourth Proportional to 65,600.70, 98,343.45 and 39,315.90

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Solution

The fourth proportional to 65,600.70, 98,343.45 and 39,315.90 is: 58,939.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,600.70 : 98,343.45 = 39,315.90 : x
  2. Step 2: Convert to fraction form
    65,600.70/98,343.45 = 39,315.90/x
  3. Step 3: Cross multiply
    65,600.70x = 98,343.45 × 39,315.90
  4. Step 4: Simplify right side
    65,600.70x = 3,866,461,245.86
  5. Step 5: Solve for x
    x = 3,866,461,245.86/65,600.70
  6. Step 6: Final answer
    x = 58,939.33

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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.